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Melilite Apatite Nepheline Augite Magnetite & Leucite

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CLB102647

Melilite Apatite Nepheline Augite Magnetite & Leucite

Classic Locality

Description Tabs

Description
Locality: 
Emmelberg, Üdersdorf, Daun, Eifel, Rhineland-Palatinate, Germany
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 3.5 × 1.2 cm
Description

I must confess it's hard for me to think of Eifel minerals as being 'beautiful' - but this one got me. A very exciting little specimen if you take a closer look. What a spectacular paragenesis. Transparent leucite and apatite crystals sit between brown melilite crystals, colorless nepheline needles, black augite and metallic magnetite (in matrix). And I think there could be even more on this small landscape.

Mineral Data
What's on the rock

Melilite

Group Parent: 
Melilite Group

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

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

Augite

Formula: 
(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Strunz: 
9.DA.15
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0

Magnetite

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

Leucite

Formula: 
K(AlSi2O6)
Strunz: 
9.GB.05
Hardness: 
5.5 - 6.0
Type Locality: 
Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy

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