Chemical Formula:
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(Fe++,Zn,Mg)2Al6BeO12 |
Composition:
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Molecular Weight = 470.24 g |
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Beryllium |
1.72 % |
Be |
4.79 % |
BeO |
0.00 % |
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Oxygen |
40.83 % |
O |
0.00 % |
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0.00 % |
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Magnesium |
1.03 % |
Mg |
1.71 % |
MgO |
0.00 % |
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Aluminum |
34.43 % |
Al |
65.05 % |
Al2O3 |
0.00 % |
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Iron |
17.81 % |
Fe |
22.92 % |
FeO |
0.00 % |
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Zinc |
4.17 % |
Zn |
5.19 % |
ZnO |
0.00 % |
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99.99 % |
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99.66 % |
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Empirical Formula:
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Fe2+1.5Zn0.3Mg0.2Al6Be0.9O12 |
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Environment:
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Wall zone of a granitic pegmatite in "hornblende" gabbro |
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Locality:
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Rosendal pegmatite, Kemio (Kimito) Island, southwestern Finland.. Link to
MinDat.org
Location Data.
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Name Origin:
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Named for Gunnar Pehrman (1895-?), Emeritus Professor of Mineralogy and Geology, Abo University, Turku, Finland |
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Synonym:
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