Prehnite Ca2Al(AlSi3O10)(OH)2 O&G Woodbury Quarry, Woodbury, Litchfield Co., Connecticut
Prehnite Ca2Al(AlSi3O10)(OH)2 Keweenaw Co., Michigan, Ex George J. Balogh Collection
Prehnite Ca2Al(AlSi3O10)(OH)2 with Chrysocolla and Copper, Phoenix Mine,Keweenaw Co., Michigan
Prehnite Ca2Al(AlSi3O10)(OH)2 with Xonotlite, Willemite, Hylophane and possibly Nasonite, Franklin, Sussex Co., New Jersey
Prehnite Ca2Al(AlSi3O10)(OH)2 (pink) under SW Ultraviolet Light, with Xonotlite (blue-violet), Willemite (green), Hylophane(magenta) and possibly Nasonite (grayish-mustard), Franklin, Sussex Co., New Jersey
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
Prehnite Ca2Al(AlSi3O10)(OH)2 with Copper, Cu, Osceola #13 Mine, Houghton Co., Michigan
Prehnite Ca2Al(AlSi3O10)(OH)2 with Copper, Cu, Osceola #13 Mine, Houghton Co., Michigan
Prehnite Ca2Al(AlSi3O10)(OH)2 Millington Quarry, Morris Co., New Jersey
Prehnite Ca2Al(AlSi3O10)(OH)2 Houghton Co., Michigan
Prehnite Ca2Al(AlSi3O10)(OH)2 Houghton Co., Michigan
Prehnite Ca2Al(AlSi3O10)(OH)2 in Basalt, Keweenaw Co., Michigan