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Melilite Magnetite & Phillipsite

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ZLT153884

Melilite Magnetite & Phillipsite

Description Tabs

Description
Locality: 
Graulay Quarry, Hillesheim, Vulkaneifel, Rhineland-Palatinate, Germany
Size Range: 
Thumbnail (1-3cm)
Size: 
1.1 × 2.2 × 1.8 cm
Largest Crystal: 
0.10cm
Description

Part of a cavity in basaltic rock with tabular, pale yellow Melilite crystals (~1 mm) coverd by some very small phillipsite and Magneite crystals on crystals of nepheline and apatite. From 1992.

Mineral Data
What's on the rock

Melilite

Group Parent: 
Melilite Group

Magnetite

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

Phillipsite

Synonym Of: 

Phillipsite-Ca

Formula: 
(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32 . 12H2O
Strunz: 
9.GC.10
Hardness: 
4.0 - 5.0

Phillipsite-K

Formula: 
(K,Na,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
Strunz: 
9.GC.10
Hardness: 
4.0 - 5.0

Phillipsite-Na

Formula: 
(Na,K,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32]·12H2O
Strunz: 
9.GC.10
Hardness: 
4.0 - 5.0
Group Parent: 
Zeolite Group

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