Chemical Formula:
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(Y,Ca)5(SiO4,PO4)3(OH,F) |
Composition:
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Molecular Weight = 642.79 g |
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Calcium |
12.47 % |
Ca |
17.45 % |
CaO |
0.00 % |
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Yttrium |
41.49 % |
Y |
52.69 % |
Y2O3 |
0.00 % |
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Silicon |
9.83 % |
Si |
21.03 % |
SiO2 |
0.00 % |
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Phosphorus |
3.61 % |
P |
8.28 % |
P2O5 |
0.00 % |
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Hydrogen |
0.12 % |
H |
1.05 % |
H2O |
0.00 % |
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Oxygen |
31.74 % |
O |
0.00 % |
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0.00 % |
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Fluorine |
0.74 % |
F |
0.74 % |
F |
0.00 % |
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100.00 % |
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101.24 % |
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Empirical Formula:
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Y3Ca2(SiO4)2.25(PO4)0.75(OH)0.75F0.25 |
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Environment:
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In pegmatites |
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Locality:
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In the Suishoyama pegmatite, near Iisaka, Fukushima Prefecture, Japan. Link to
MinDat.org
Location Data.
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Name Origin:
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From the Greek for weight, in allusion to its density and the content of Y |
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Synonym:
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Abukumalite |
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