Chemical Formula:
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(Fe+++,Ti)4Ti3AsO13(OH) |
Composition:
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Molecular Weight = 666.95 g |
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Hydrogen |
0.15 % |
H |
1.35 % |
H2O |
0.00 % |
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Oxygen |
33.58 % |
O |
0.00 % |
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0.00 % |
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Titanium |
21.54 % |
Ti |
35.93 % |
TiO2 |
0.00 % |
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Iron |
33.49 % |
Fe |
47.89 % |
Fe2O3 |
0.00 % |
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Arsenic |
11.23 % |
As |
14.83 % |
As2O3 |
0.00 % |
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99.99 % |
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100.00 % |
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Empirical Formula:
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Fe3+4Ti3AsO13(OH) |
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Environment:
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The Fe++ dominant analog of tomichite and the As+++ dominant analog of derbylite. In hydrothermal veins in a two-mica paragneiss |
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Locality:
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Larchelitini, in the Monte Leone Nappe, Binntal region, western Alps, Switzerland.. Link to
MinDat.org
Location Data.
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Name Origin:
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For Prof. Dr. Stefan Graeser (1935-), in recognition of his extensive research on the oxides and sulfosalts of arsenic in the Binntal region of Switzerland |
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Synonym:
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IMA1996-010 |
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