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Phillipsite-Ca, (Ca,K,Na)1-2(Si,Al)8O16•6(H2O), Phillipsite-K,   	(K,Na,Ca)1-2(Si,Al)8O16•6(H2O),  Alter Stein Quarry, Allendorf, Greifenstein, Hesse, Germany. An exceptional 12 mm. Morvenite twin of phillipsite. Crystals of this location are zonend and may contain zones of both phillipsite-K and phillipsite-Ca. Copyright © Volker Betz (2013)

Phillipsite-Ca, (Ca,K,Na)1-2(Si,Al)8O16•6(H2O), Phillipsite-K, (K,Na,Ca)1-2(Si,Al)8O16•6(H2O), Alter Stein Quarry, Allendorf, Greifenstein, Hesse, Germany. An exceptional 12 mm. Morvenite twin of phillipsite. Crystals of this location are zonend and may contain zones of both phillipsite-K and phillipsite-Ca. Copyright © Volker Betz (2013)

Galkhaite Getchell Mine, Adam Peak, Potosi District, Osgood Mts, Humboldt Co., Nevada, USA Source: mindat.org

Galkhaite Getchell Mine, Adam Peak, Potosi District, Osgood Mts, Humboldt Co., Nevada, USA Source: mindat.org

A neat contrast of emeralds with Pyrite from the Chivor Mine, Colombia. Crystal Classics Minerals

A neat contrast of emeralds with Pyrite from the Chivor Mine, Colombia. Crystal Classics Minerals

Gorgeous specimen featuring four Beryl var Emerald crystals on Calcite. Chivor Mine, Guavió-Guatéque Mining District, Boyacá Department, Colombia-

Gorgeous specimen featuring four Beryl var Emerald crystals on Calcite. Chivor Mine, Guavió-Guatéque Mining District, Boyacá Department, Colombia-

Phillipsite  © Volker Betz (2010)  - This image is   Locality: Dattenberg Quarry, Dattenberg, Linz am Rhein, Westerwald, Rhineland-Palatinate, Germany  Field of view 3 mm. Stempel twin on 3 axes composed of Marburg twins. Zeolite collection of Volker Betz.     a mineral of the zeolite group; a hydrated potassium, calcium and aluminium silicate, approximating to (Ca,Na2,K2)3Al6Si10O32·12H2O. (Also with sodium replaced by calcium: KCaAl3Si5O16·6H2O[1]).

Phillipsite © Volker Betz (2010) - This image is Locality: Dattenberg Quarry, Dattenberg, Linz am Rhein, Westerwald, Rhineland-Palatinate, Germany Field of view 3 mm. Stempel twin on 3 axes composed of Marburg twins. Zeolite collection of Volker Betz. a mineral of the zeolite group; a hydrated potassium, calcium and aluminium silicate, approximating to (Ca,Na2,K2)3Al6Si10O32·12H2O. (Also with sodium replaced by calcium: KCaAl3Si5O16·6H2O[1]).

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