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Specimens online:418
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Pseudobrookite with Topaz- Thomas Range, Juab Co., Utah, USA (#:MINS8824)

Very nice jet black pseudobrookite xls up to 7 mm with topaz in association on rhiolite matrix.

Formula :
(Fe³⁺,Fe²⁺)₂(Ti,Fe³⁺)O₅
System: monoclinic Hardness:6 Rarity:not common
Strunz id:IV/C.24-20 - OXIDES and HYDROXIDES
Name origin: From the Greek ψευδής, false, and brookite since its resemblance to brookite is misleading.