Prehnite

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Prehnite Ca2Al(AlSi3O10)(OH)2 O&G Woodbury Quarry, Woodbury, Litchfield Co., Connecticut

Prehnite Ca2Al(AlSi3O10)(OH)2 Keweenaw Co., MI, Ex George J. Balogh Collection

Prehnite Ca2Al(AlSi3O10)(OH)2

Prehnite Ca2Al(AlSi3O10)(OH)2 after Laumontite, Kandivali Quarry, Malad, Ward 38, Mumbai, Maharashtra, India ex Chris & Agatha Galas

Prehnite Ca2Al(AlSi3O10)(OH)2 with Copper, Cu, Caledonia Mine, Ontonagon Co., Michigan

Prehnite Ca2Al(AlSi3O10)(OH)2 with Epidote, Mali

Prehnite Ca2Al(AlSi3O10)(OH)2 with Copper, Cu, Cliff Mine, Keweenaw Co., Michigan, Ex Renaud Vochten

Prehnite Ca2Al(AlSi3O10)(OH)2 in Amygdaloidal Basalt with Epidote, Ojibway Mine, Keweenaw Co., Michigan

Prehnite Ca2Al(AlSi3O10)(OH)2 with Epidote, Kayes Region, Mali

Prehnite Ca2Al(AlSi3O10)(OH)2 after Laumontite, Kandivali Quarry, Malad, Ward 38, Mumbai, Maharashtra, India ex Chris & Agatha Galas

Prehnite Ca2Al(AlSi3O10)(OH)2 Near Simpson Island, Thunder Bay District, Ontario

Prehnite Ca2Al(AlSi3O10)(OH)2 O & G Woodbury Quarry, Woodbury, Litchfield Co., Connecticut

Prehnite Ca2Al(AlSi3O10)(OH)2 O & G Woodbury Quarry, Woodbury, Litchfield Co., Connecticut