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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 :
(Fe
3+
,Fe
2+
)
2
(Ti,Fe
3+
)O
5
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.
Specimen weight:45 gr.
Crystal size:Up to 7 mm wide
Overall size: 48mm x 38 mm x 23 mm
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