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Pumpellyite-(Mg) : Ca2MgAl2[(OH)2|SiO4|Si2O7] · H2O | |
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Obri Dul (Riesental), Krkonoše Mts (Riesengebirge), Hradec Králové Region, Bohemia (Böhmen; Boehmen), Czech Republic Field of view 4 mm. Specimen and photo Leon Hupperichs. |
| © Leon Hupperichs | Photo ID: 94433 View Count: 284 |
Pumpellyite-(Mg) : Ca2MgAl2[(OH)2|SiO4|Si2O7] · H2O, Albite : Na[AlSi3O8] | |
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Obri Dul (Riesental), Krkonoše Mts (Riesengebirge), Hradec Králové Region, Bohemia (Böhmen; Boehmen), Czech Republic Green aggregates of Pumpellyite-(Mg) together with Albite xls. Field of view 7 mm. Depth of field is achieved with CombineZM. Specimen and photo Leon Hupperichs. |
| © Leon Hupperichs | Photo ID: 94434 View Count: 284 |
Pumpellyite-(Mg) : Ca2MgAl2[(OH)2|SiO4|Si2O7] · H2O, Quartz : SiO2 | |
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Obri Dul (Riesental), Krkonoše Mts (Riesengebirge), Hradec Králové Region, Bohemia (Böhmen; Boehmen), Czech Republic A 9 x 8 cm specimen with white crystals of Pumpellyite-(Mg) on crystals of Quartz from Obri Dul,Bohemia, Czech Rep. Specimen and photo: Knut Eldjarn. |
| © Knut Eldjarn | Photo ID: 145691 View Count: 146 |
Pumpellyite-(Mg) : Ca2MgAl2[(OH)2|SiO4|Si2O7] · H2O, Albite : Na[AlSi3O8], Quartz : SiO2 | |
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Obri Dul (Riesental), Krkonoše Mts (Riesengebirge), Hradec Králové Region, Bohemia (Böhmen; Boehmen), Czech Republic Quartz crystals with exclusive green aggregates Pumpellyite and Albite. Pumpelyite spherical aggregates are formed too on very thin crystals quartz. FoV 15mm. |
| © Vítězslav Snášel | Photo ID: 265743 View Count: 70 |
Pumpellyite-(Mg) : Ca2MgAl2[(OH)2|SiO4|Si2O7] · H2O, Quartz : SiO2 | |
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Copper Falls Mine, Copper Falls, Keweenaw Co., Michigan, USA A last piece of the one single specimen that had a natural fault in the middle, and cracked apart on the way to me in the mail (though to tell the truth, it was a clunker and I would have trimmed it anyhow)...A superb thumbnail was the result! Note that this specimen was presented to Washington Roebling (1837-1926) on or near his deathbed as a ... |
| © Rob Lavinsky | Photo ID: 21371 View Count: 1237 |
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Copper Falls Mine, Copper Falls, Keweenaw Co., Michigan, USA Green acicular, fibrous crystal clusters of this rare Pumpellyite species associated with a dark green to yellowish Epidote in crystal aggregates. 8x6 mm the field in photo. Metatype specimen, ex Linck Collection, via Palache, Roebling, Gage, Lawinsky, now in my personal systematic suite. Photo Simone Citon. |
| © Simone Citon | Photo ID: 258332 View Count: 22 |
Pumpellyite-(Mg) (Var: Chlorastrolite) : Ca2MgAl2[(OH)2|SiO4|Si2O7] · H2O | |
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Phoenix Mine, Phoenix, Keweenaw Co., Michigan, USA Chlorastrolite is Michigan's official state gemstone and is known locally as "Isle Royale Greenstone". Scientifically, they are a form of the mineral pumpellyite. Available analyses suggest the Michigan pumpellyites are magnesium-dominant, intermediate solid solution series between pumpellyite (Mg+), pumpellyite (Fe2+) and pumpellyite (Fe3+). ... |
| © Paul T. Brandes | Photo ID: 215146 View Count: 157 |
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