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Segelerite & Mitridatite

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CLB172659

Segelerite & Mitridatite

ex collection Ralph E. Merrill
Rare Mineral

Description Tabs

Description
Locality: 
Milgun Mine, Milgun Station, Meekatharra Shire, Western Australia, Australia
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.3 × 3.2 × 2.5 cm
Description

Interesting sample of segelerite and mitridatite, according to the Ralp Merrill label. I think I also see jarosite and/or natrojarosite. Should be analyzed.

Mineral Data
What's on the rock

Segelerite

Formula: 
Ca2 Mg2 Fe3+2(PO4)4(OH)2·8H2O
Strunz: 
8.DH.20
Hardness: 
4.0
Streak: 
White
Type Locality: 
Tip Top Mine (Tip Top pegmatite), Fourmile, Custer District, Custer Co., South Dakota, USA

Mitridatite

Formula: 
Ca2Fe3+3(PO4)3O2·3H2O
Strunz: 
8.DH.30
Crystal System: 
Monoclinic
Hardness: 
2.5
Type Locality: 
Kamysh-Burun Trough, Kerchenskoe deposit, Kerchenskyi (Fe)-ore basin, Kerch peninsula (Kertch peninsula), Crimea peninsula, Crimea Oblast', Ukraine...

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