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Nepheline Leucite Enstatite & Forsterite

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CLB110558

Nepheline Leucite Enstatite & Forsterite

Classic Locality

Description Tabs

Description
Locality: 
Löhley, Üdersdorf, Daun, Eifel, Rhineland-Palatinate, Germany
Size Range: 
Cabinet (10-18 cm)
Size: 
14.3 × 6.4 × 2.5 cm
Description

At first sight a dull rock, this specimen bears many different minerals, among them most probably the above mentioned, fluorapatite eventually and a few more ... (specimen not analyzed)

Mineral Data
What's on the rock

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

Leucite

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

Enstatite

Formula: 
MgSiO3
Group Parent: 
Orthopyroxene Subgroup
Strunz: 
9.DA.05
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
5.0 - 6.0

Forsterite

Formula: 
Mg2SiO4
Strunz: 
9.AC.05
Crystal System: 
Orthorhombic
Hardness: 
7.0
Streak: 
White
Type Locality: 
Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy

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