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Magnetite Actinolite & Feldspar

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SHS597161

Magnetite Actinolite & Feldspar

ex Collection Edgar Franz ( Freiberg/Saxony)

Description Tabs

Description
Locality: 
French Creek Mines, St Peters, Chester County, Pennsylvania, United States of America
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.9 × 2.7 × 2.9 cm
Description

Nice magnetite, actinolite and feldspar in matrix

Mineral Data
What's on the rock

Magnetite

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

Actinolite

Formula: 
☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Strunz: 
9.DE.10
Crystal System: 
Monoclinic - Prismatic
Hardness: 
5.0 - 6.0
Streak: 
White

Feldspar

Group Parent: 
Feldspar Group