A common mineral embracing many varieties varying in color and in composition. It occurs in monoclinic crystals; also massive, generally with fibrous…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Native phosphate of lime, occurring usually in six-sided prisms, color often pale green, transparent or translucent.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral identical in composition with calcite or carbonate of lime, but differing from it in its crystalline form and some of its physical characte…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Sulphide of silver; -- also called vitreous silver, or silver glance. It has a metallic luster, a lead-gray color, and is sectile like lead.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral of a tin-white color and metallic luster, containing arsenic, sulphur, and iron; -- also called arsenical pyrites and mispickel.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Alt. of Asphaltum
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A variety of pyroxene, usually of a black or dark green color, occurring in igneous rocks, such as basalt; -- also used instead of the general term p…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Native sulphate of barium, a mineral occurring in transparent, colorless, white to yellow crystals (generally tabular), also in granular form, and in…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Barium sulphate, generally called heavy spar or barite. See Barite.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Alt. of Beauxite
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral of great hardness, and, when transparent, of much beauty. It occurs in hexagonal prisms, commonly of a green or bluish green color, but als…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A common name of dolomite; -- so called because it contains magnesia, the soluble salts of which are bitter. See Dolomite.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral, called also sphalerite, and by miners mock lead, false galena, and black-jack. It is a zinc sulphide, but often contains some iron. Its co…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A white or gray crystalline salt, with a slight alkaline taste, used as a flux, in soldering metals, making enamels, fixing colors on porcelain, and…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A valuable ore of copper, containing copper, iron, and sulphur; -- also called purple copper ore (or erubescite), in allusion to the colors shown upo…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral, the hydrous silicate of zinc.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A hydrous chloride of potassium and magnesium, sometimes found associated with deposits of rock salt.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Native tin dioxide; tin stone; a mineral occurring in tetragonal crystals of reddish brown color, and brilliant adamantine luster; also massive, some…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Native strontium sulphate, a mineral so named from its occasional delicate blue color. It occurs crystallized, also in compact massive and fibrous fo…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Native lead carbonate; a mineral occurring in colorless, white, or yellowish transparent crystals, with an adamantine, also massive and compact.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Native copper sulphide, called also copper glance, and vitreous copper; a mineral of a black color and metallic luster.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Copper pyrites, or yellow copper ore; a common ore of copper, containing copper, iron, and sulphur. It occurs massive and in tetragonal crystals of a…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
The name of a group of minerals, usually of a green color and micaceous to granular in structure. They are hydrous silicates of alumina, iron, and ma…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A black submetallic mineral consisting of oxide of chromium and iron; -- called also chromic iron.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral, found in crystals, of a yellow to green or brown color, and consisting of aluminia and glucina. It is very hard, and is often used as a ge…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Red sulphide of mercury, occurring in brilliant red crystals, and also in red or brown amorphous masses. It is used in medicine.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral of a nearly silver-white color, composed of arsenic, sulphur, and cobalt.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral of a black color, submetallic luster, and high specific specific gravity. It is a niobate (or columbate) of iron and manganese, containing…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
See Iolite.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
The earth alumina, as found native in a crystalline state, including sapphire, which is the fine blue variety; the oriental ruby, or red sapphire; th…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Lead chromate occuring in crystals of a bright hyacinth red color; -- called also red lead ore.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A fluoride of sodium and aluminum, found in Greenland, in white cleavable masses; -- used as a source of soda and alumina.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
The red oxide of copper; red copper; an important ore of copper, occurring massive and in isometric crystals.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral occuring in thin-bladed crystals and crystalline aggregates, of a sky-blue color. It is a silicate of aluminium.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral consisting of the carbonate of lime and magnesia in varying proportions. It occurs in distinct crystals, and in extensive beds as a compact…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Corundum in the form of grains or powder, used in the arts for grinding and polishing hard substances. Native emery is mixed with more or less magnet…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A colorless crystalline substance, C4H6.(OH)4, of a sweet, cooling taste, extracted from certain lichens, and obtained by the decomposition of erythr…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral of a brownish black color, essentially a tantalo-niobate of yttrium, erbium, and cerium; -- so called after Robert Ferguson.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A fluid state.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Calcium fluoride, a mineral of many different colors, white, yellow, purple, green, red, etc., often very beautiful, crystallizing commonly in cubes…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral of a nearly black color and vitreous luster, and consisting principally of the silicates of yttrium, cerium, and iron.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A remedy or antidose for poison; theriaca.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral having many varieties differing in color and in their constituents, but with the same crystallization (isometric), and conforming to the sa…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
An amorphous mineral of apple-green color; a hydrous silicate of nickel and magnesia. It is an important ore of nickel.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A hydrate of alumina.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
The green mineral characteristic of the greensand of the chalk and other formations. It is a hydrous silicate of iron and potash. See Greensand.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Native cadmium sulphide, a mineral occurring in yellow hexagonal crystals, also as an earthy incrustation.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral consisting of the hydrous sulphate of lime (calcium). When calcined, it forms plaster of Paris. Selenite is a transparent, crystalline vari…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Native salt; sodium chloride.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Native barium sulphate or barite, -- so called because of its high specific gravity as compared with other non-metallic minerals.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Same as Vesuvianite.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Titanic iron. See Menaccanite.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Alt. of Iridosmium
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A semitransparent, whitish, and very pure from of gelatin, chiefly prepared from the sounds or air bladders of various species of sturgeons (as the A…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
See Jade, the stone.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A compound salt consisting chiefly of potassium chloride and magnesium sulphate, occurring at the Stassfurt salt mines in Prussian Saxony.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Hydrous sulphate of magnesia found at the salt mines of Stassfurt, Prussian Saxony.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A light earthy white substance, consisting of magnesium oxide, and obtained by heating magnesium hydrate or carbonate, or by burning magnesium. It ha…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Native magnesium carbonate occurring in white compact or granular masses, and also in rhombohedral crystals.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Native hydrous carbonate of copper, usually occurring in green mammillary masses with concentric fibrous structure.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A variety of bitumen, viscid and tenacious, like pitch, unctuous to the touch, and exhaling a bituminous odor.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
One of the oxides of manganese; -- called also gray manganese ore. It occurs in brilliant steel-gray or iron-black crystals, also massive.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A fine white claylike mineral, soft, and light enough when in dry masses to float in water. It is a hydrous silicate of magnesia, and is obtained chi…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
The name of a group of minerals characterized by highly perfect cleavage, so that they readily separate into very thin leaves, more or less elastic.…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A believer in the doctrine of William Miller (d. 1849), who taught that the end of the world and the second coming of Christ were at hand.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Arsenical iron pyrites; arsenopyrite.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral occurring in soft, lead-gray, foliated masses or scales, resembling graphite; sulphide of molybdenum.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral occurring usually in small isolated crystals, -- a phosphate of the cerium metals.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Alt. of Nephelite
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral occuring at Vesuvius, in glassy agonal crystals; also elsewhere, in grayish or greenish masses having a greasy luster, as the variety elaeo…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Same as Columbite.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Nitrate of calcium, a substance having a grayish white color, occuring in efforescences on old walls, and in limestone caves, especially where there…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
An olive-green mineral, a hydrous arseniate of copper; olive ore.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A common name of the yellowish green mineral chrysolite, esp. the variety found in eruptive rocks.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Honor; grace; favor; mercy; clemency; happy augry.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Arsenic sesquisulphide, produced artificially as an amorphous lemonyellow powder, and occurring naturally as a yellow crystalline mineral; -- formerl…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A waxlike mineral resin; -- sometimes called native paraffin, and mineral wax.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Alt. of Periclasite
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A compact granular cryptocrystalline mineral of a dull grayish or greenish white color. It is a hydrous alkaline silicate, and is derived from the al…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A colorless transparent mineral, resembling quartz, occurring with castor or castorite on the island of Elba. It is a silicate of alumina and caesia.…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A hydrous oxide of manganese, occurring in smooth, botryoidal forms, and massive, and having an iron-black or steel-gray color.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A common mineral of a pale brass-yellow color and brilliant metallic luster, crystallizing in the isometric system; iron pyrites; iron disulphide.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Manganese dioxide, a mineral of an iron-black or dark steel-gray color and metallic luster, usually soft. Pyrolusite parts with its oxygen at a red h…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Native lead phosphate with lead chloride, occurring in bright green and brown hexagonal crystals and also massive; -- so called because a fused globu…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral, usually of a white or greenish color and pearly luster, consisting chiefly of the hydrous silicate of alumina.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A common mineral occurring in monoclinic crystals, with a prismatic angle of nearly 90?, and also in massive forms which are often laminated. It vari…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Alt. of Pyrrhotite
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A bronze-colored mineral, of metallic luster. It is a sulphide of iron, and is remarkable for being attracted by the magnet. Called also magnetic pyr…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A form of silica, or silicon dioxide (SiO2), occurring in hexagonal crystals, which are commonly colorless and transparent, but sometimes also yellow…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Arsenic sulphide, a mineral of a brilliant red color; red orpiment. It is also an artificial product.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Manganese carbonate, a rose-red mineral sometimes occuring crystallized, but generally massive with rhombohedral cleavage like calcite; -- called als…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Manganese spar, or silicate of manganese, a mineral occuring crystallised and in rose-red masses. It is often used as an ornamental stone.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral usually of a reddish brown color, and brilliant metallic adamantine luster, occurring in tetragonal crystals. In composition it is titanium…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A rare mineral having a velvet-black color and submetallic luster. It is a niobate of uranium, iron, and the yttrium and cerium metals.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Resembling sapphire; made of sapphire; having the color, or any quality of sapphire.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Calcium tungstate, a mineral of a white or pale yellowish color and of the tetragonal system of crystallization.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Meerschaum. See Meerschaum.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A tin-white or gray mineral of metallic luster. It is an arsenide of cobalt, nickel, and iron. Called also speiskobalt.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Native zinc carbonate. It generally occurs in stalactitic, reniform, or botryoidal shapes, of a white to gray, green, or brown color. See Note under…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral of a white to blue or gray color, occuring commonly in dodecahedrons, also massive. It is a silicate of alumina and soda with some chlorine.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
An old name for a nonmetallic mineral, usually cleavable and somewhat lustrous; as, calc spar, or calcite, fluor spar, etc. It was especially used in…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Zinc sulphide; -- called also blende, black-jack, false galena, etc. See Blende (a).
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Alt. of Spinelle
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral of a white to yellowish, purplish, or emerald-green color, occuring in prismatic crystals, often of great size. It is a silicate of alumini…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral of a steel-gray or iron-black color; tin pyrites. It is a sulphide of tin, copper, and iron.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral of a lead-gray color and brilliant metallic luster, occurring in prismatic crystals; sulphide of antimony; -- called also antimony glance,…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Strontium carbonate, a mineral of a white, greenish, or yellowish color, usually occurring in fibrous massive forms, but sometimes in prismatic cryst…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral, a telluride of gold and silver, of a steel-gray, silver-white, or brass-yellow color. It often occurs in implanted crystals resembling wri…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Alt. of Sylvite
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Native potassium chloride.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A soft mineral of a soapy feel and a greenish, whitish, or grayish color, usually occurring in foliated masses. It is hydrous silicate of magnesia. S…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A heavy mineral of an iron-black color and submetallic luster. It is essentially a tantalate of iron.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral of a brown to black color, or, as in the variety orangite, orange-yellow. It is essentially a silicate of thorium.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral occurring in rhombic prisms, generally yellowish and pellucid, also colorless, and of greenesh, bluish, or brownish shades. It sometimes oc…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral occurring usually in three-sided or six-sided prisms terminated by rhombohedral or scalenohedral planes. Black tourmaline (schorl) is the m…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Pure silica, like quartz, but crystallizing in hexagonal tables. It is found in trachyte and similar rocks.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Alt. of Turquois
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral occurring in yellowish, and ruby-red hexagonal crystals. It consist of lead vanadate with a small proportion of lead chloride.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A group of minerals having, a micaceous structure. They are hydrous silicates, derived generally from the alteration of some kind of mica. So called…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Of or pertaining to Vesuvius, a volcano near Naples.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral occurring in tetragonal crystals, and also massive, of a brown to green color, rarely sulphur yellow and blue. It is a silicate of alumina…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Tungstate of iron and manganese, generally of a brownish or grayish black color, submetallic luster, and high specific gravity. It occurs in cleavabl…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A silicate of lime of a white to gray, red, or yellow color, occurring generally in cleavable masses, rarely in tabular crystals; tabular spar.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Native lead molybdate occurring in tetragonal crystals, usually tabular, and of a bright orange-yellow to red, gray, or brown color; -- also called y…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A native phosphate of yttrium occurring in yellowish-brown tetragonal crystals.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A term now used to designate any one of a family of minerals, hydrous silicates of alumina, with lime, soda, potash, or rarely baryta. Here are inclu…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A steel-gray metallic mineral, a sulphide of antimony and lead.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral occurring in tetragonal crystals, usually of a brown or gray color. It consists of silica and zirconia. A red variety, used as a gem, is ca…
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a narrower or more specific lexical category.