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Johannsenite Axinite-(Mn) Sphalerite & Galena

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MNT38481

Johannsenite Axinite-(Mn) Sphalerite & Galena

Classic Locality

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Description
Locality: 
Iron Cap Mine, Black Peak, Gila County, Arizona, United States of America
Size Range: 
Cabinet (10-18 cm)
Size: 
13 × 7 × 5.5 cm
Description

A very interesting paragenesis specimen: the vuggy rock matrix is partly covered with pale greenish johannsenite crystals (a rare diopside group mineral) accompanied by greenish to brownish axinite-(Mn) crystals, some yellowish greenish sphalerite crystals and on top grey galena cubes.

Also an incomplete quartz crystal is present.

A not so common specimen.

Mineral Data
What's on the rock

Johannsenite

Formula: 
CaMn2+Si2O6
Group Parent: 
Clinopyroxene Subgroup
Strunz: 
9.DA.15
Hardness: 
6.0
Streak: 
white
Type Locality: 
Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

Axinite-(Mn)

Formula: 
Ca2Mn2+Al2BSi4O15(OH)
Strunz: 
9.BD.20
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Harz, Lower Saxony, Germany

Sphalerite

Formula: 
ZnS
Strunz: 
2.CB.05a
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0

Galena

Formula: 
PbS
Strunz: 
2.CD.10
Crystal System: 
Isometric
Hardness: 
2.5
Colour: 
Lead-grey
Streak: 
Lead-grey

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Terms & Conditions

Thank you for your interest in my offers! Payment is possible via Paypal, bank transfer or cash if you pick up the item(s) personally. Bank data will be provided after settling the auction/transaction(s) if needed.

In case you are not happy with a specimen, you may send it back within 4 weeks. After receipt, i will refund the price minus shipping costs. Please inform me before sending an item back. If you have any questions (or maybe complaints) please feel free to contact me.

Best regards Roger

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