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Epidote & Magnetite & Hastingsite

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RFJ1036980

Description Tabs

Description
Locality: 
Kuryu Mine, Minamiaiki, Nagano Prefecture, Honshu Island, Japan
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.1 × 4.4 × 3.4 cm
Description

Epidote on Magnetite crystals and a spray of Hastingsite, quite a rare combination in Japan, the locality used to be famous for Magnetite crystals without other minerals, this is very rarly seen material.

Mineral Data
What's on the rock

Epidote

Formula: 
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05a
Crystal System: 
Monoclinic
Hardness: 
6.0
Streak: 
Colorless
Type Locality: 
Bourg d'Oisans, Isère, Rhône-Alpes, France...

Magnetite

Formula: 
Fe2+Fe3+2O4
Strunz: 
4.BB.05
Crystal System: 
Isometric
Hardness: 
5.5 - 6.5
Streak: 
Black

Hastingsite

Formula: 
{Na}{Ca2}{Fe2+4Fe3+}(Al2Si6O22)(OH)2
Strunz: 
9.DE.15
Hardness: 
5.0 - 6.0
Type Locality: 
Dungannon Township, Hastings Co., Ontario, Canada

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