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Melilite Nepheline Apatite Pyroxene Group & Magnetite

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ZLT142726

Melilite Nepheline Apatite Pyroxene Group & Magnetite

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Description
Locality: 
Rother Kopf, Roth, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2.5 × 3.3 × 2.5 cm
Description

Fraction of a typical fissure wall coating with many melilite crystals.

Mineral Data
What's on the rock

Melilite

Group Parent: 
Melilite Group

Nepheline

Formula: 
(Na,K)AlSiO4
Strunz: 
9.FA.05
Hardness: 
5.5 - 6.0
Type Locality: 
Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy

Apatite

Synonym Of: 

Chlorapatite

Formula: 
Ca5(PO4)3Cl
Strunz: 
8.BN.05
Hardness: 
5.0

Fluorapatite

Formula: 
Ca2Ca3(PO4)3F
Strunz: 
8.BN.05
Hardness: 
5.0

Hydroxylapatite

Formula: 
Ca5(PO4)3(OH)
Strunz: 
8.BN.05
Hardness: 
5.0
Crystal System: 
Hexagonal
Hardness: 
5

Pyroxene Group

Group Members: 
Clinopyroxene Subgroup
Orthopyroxene Subgroup

Magnetite

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

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