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Native elements Sulfides Oxides Silicates Forms allocation of minerals Phosphates Carbonates Sulfates Halides Synthetic minerals Chromates Tungstates Gemology Jewelry and semi-precious stones Articles of stone Deposits of semiprecious raw Precious metals Minerals gold deposits
Oxides
[82 from 99] Fired Opal Thread 1,4, cm. in stratum.
The name, a brief visual description:
Fired Opal Thread 1,4, cm. in stratum.
Sample size:
Ore. 5,4х3,7х3,1 cm., 0,060 kg.
Place of sampling:
The field unknown
Nemalite In gray-white marble-magnesite inclusions of long-asbestovidn...
Pyrochlore. Octahedral crystal form.