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Magnetite & Nosean

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ZLT191756

Magnetite & Nosean

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Description
Locality: 
In den Dellen Quarries, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 2.3 × 2 cm
Largest Crystal: 
0.20cm
Description

Group of magnetite octaherdrons in a vug of a nosenan-sanidinite. The crystals show stratiated edges caused by alternating steps of (111) faces which look like a rhombic dodecahedron. Some dark nosean crystals are also present.

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

Nosean

Formula: 
Na8(Al6Si6O24)(SO4)·H2O
Strunz: 
9.FB.10
Hardness: 
5.5
Type Locality: 
Sandkuhle, Maria Laach, Laach lake volcanic complex, Eifel, Rhineland-Palatinate, Germany

Seller Information

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