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Jahnsite-(CaMnFe)

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HEF1163765

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Description
Locality: 
Sapucaia Mine, Sapucaia do Norte, Galiléia, Minas Gerais, Brazil
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1.2 × 1 cm
Description

Jahnsite-(CaMnFe) is a rare phosphate mineral from the jahnsite group, containing calcium, manganese, and iron. It forms secondarily in metamorphic or pegmatitic environments, usually through the alteration of other phosphate-bearing minerals. Typical occurrences are acicular to prismatic crystals or granular aggregates, often in yellowish-brown to greenish-brown hues, associated with other phosphates. Here, the mineral forms yellowish-brown crystals.
 

Mineral Data
What's on the rock

Jahnsite-(CaMnFe)

Formula: 
{Ca}{Mn2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
4.0
Streak: 
White
Type Locality: 
Fletcher Mine, Groton, Grafton Co., New Hampshire, USA

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Shipping Information

Postage Area Price
Germany : Insured parcel < 2000g 6 €
€6
Germany : Insured parcel > 2000g 9 €
€9
International <500g 10 €
€10
International > 500g < 1000g 18€
€18
USA 12€
€12
Worldwide < 5000g insured parcel 50€
€50
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