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Gismondine With Phillipsite

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QRI872079

Gismondine With Phillipsite

Former collection Christian Mavris
Classic Locality

Description Tabs

Description
Locality: 
Osa Quarry, Osteria dell'Osa, Rome Province, Lazio, Italy
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.6 × 4.7 × 3.4 cm
Largest Crystal: 
0.40cm
Weight: 
77.00gr
Description

Dozens of gismondine and phillipsite crystals are literally dressing up this volcanic matrix specimen, which appears mostly covered with them. WIth a good lustre and locally even some transparency, the crystals give a very esthetic appearance to the specimen.

Defunct Latium locality, very sought after!

Mineral Data
What's on the rock

Gismondine

Synonym Of: 

Gismondine-Ca

Formula: 
CaAl2Si2O8·4H2O
Strunz: 
9.GC.05
Hardness: 
0.0
Group Parent: 
Zeolite Group

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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