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Augite Olivine Psm & Phillipsite

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ZLT155411

Augite Olivine Psm & Phillipsite

Description Tabs

Description
Locality: 
Limberg Quarries, Sasbach am Kaiserstuhl, Freiburg Region, Baden-Württemberg, Germany
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.8 × 4.2 × 3.9 cm
Largest Crystal: 
1.10cm
Description

Selected sample of limburgue with black well shaped augite crystals in a ornge-brown matrix of altered olivine with some idomorph pseudomorphoses known as "hyalosiderite". Some vugs lined with phillipsite are also present.

Mineral Data
What's on the rock

Augite

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

Olivine

Synonym Of: 

Olivine Group

Formula: 
(Mg,Fe2+)2SiO4
Group Parent: 
Olivine
Crystal System: 
Orthorhombic
Hardness: 
6.5 - 7
Colour: 
Yellowish green, olive green, greenish black, or reddish brown
Streak: 
White

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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