mineraloid
61leonardite — noun A dark, vitreous mineraloid produced by surface oxidation of lignite …
62Chalmers Topaz — Chalmer s Topaz Weight 5,899.5 carats (1,179.8 g) Color White with blue cast Cut Oval (brilliant)[1] Country of origin Brazil …
63Chernobylite — is a technogenic mineral, a crystalline zirconium silicate with high (up to 10%) content of uranium as a solid solution. It is black and yellow. It was discovered in the corium produced in the Chernobyl accident, a lava like glassy material… …
64Chlorocalcite — General Category Halides Chemical formula KCaCl3 Strunz classification 03.AA.40 Unit cell a = 7.35Å, b = 10.44Å, c …
65Clausthalite — General Category Selinide mineral Chemical formula PbSe …
66Mayenite — (after Mayen, Germany), Ca12Al14O33, is a rare cubic mineral of cubic symmetry, originally reported from Eifel volcanic complex (Germany). It is also found at pyrometamorphic sites: e.g., in the Hatrurim Formation (Israel) and in some burned coal …
67Merenskyite — General Category Telluride mineral Chemical formula (Pd,Pt)(Te,Bi)2 Strunz classification 02.EA.20 Crystal symmetry …
68Smoky quartz — Smoky or smokey quartz is a brown to black variety of quartz.[1] Like other quartz gems, it is a silicon dioxide crystal. The smoky colour results from free silicon, formed from the silicon dioxide by natural irradiation …
69Naldrettite — General Category Sulfide mineral Chemical formula Pd2Sb Strunz classification 02.AC.25d Crystal symmetry …
70Natural flower stone — is found mostly in Asia, in the form of rich deposits of a bright mineral which has not yet been identified. The deposits have the appearance of flowers in a darker mineral. This mineral has only recently[when?] been discovered. See also Yuhua… …
