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Phillipsite-Ca & Chabazite-Ca

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PAV917869

Phillipsite-Ca & Chabazite-Ca

New Discovery

Description Tabs

Description
Locality: 
Fajã Escura, Curral das Freiras, Câmara de Lobos, Madeira Islands, Portugal
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.2 × 1.6 × 0.5 cm
Description

Sample with many spectacular twinned phillipsite-Ca and tinny chabazite-Ca (var. phacolite).

Collected: 
2021
Boxed with Label
Mineral Data
What's on the rock

Phillipsite-Ca

Formula: 
(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32 . 12H2O
Strunz: 
9.GC.10
Crystal System: 
Monoclinic
Hardness: 
4.0 - 5.0
Streak: 
White
Type Locality: 
Lower Salt Lake Tuff, Puuloa Road, Oahu Island, Honolulu Co., Hawaii, USA

Chabazite-Ca

Formula: 
(Ca,K2,Na2)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 5.0
Streak: 
White
Type Locality: 
Colle del Lares, San Nicolò Valley, Buffaure Group, Fassa Valley, Trento Province, Trentino-Alto Adige, Italy