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 containing group, substance or whole.
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 containing group, substance or whole.
A native phosphate of yttrium occurring in yellowish-brown tetragonal crystals.
oewn 2023
0% interchangeable
Open English WordNet identifies the related term as a containing group, substance or whole.