Trikalsilite Mineral Data
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General Trikalsilite Information
Chemical Formula:
(K,Na)AlSiO4
Composition:
Molecular Weight = 154.14 gm
Potassium
19.02 % K 22.92 % K
2
O
Sodium
3.73 % Na 5.03 % Na
2
O
Aluminum
17.51 % Al 33.08 % Al
2
O
3
Silicon
18.22 % Si 38.98 % SiO
2
Oxygen
41.52 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
K
0.75
Na
0.25
AlSiO
4
Environment:
In lava.
IMA Status:
Valid Species (Pre-IMA) 1957
Locality:
From the Kabfumu volcanic flow, between the Mt. Mikeno and Mt. Nyiragongo volcanos, Kivu Province, Congo (Zaire). Link to 
MinDat.org
Location Data.
Name Origin:
For the length of the [100] axis, three times that of kalsilite.
Name Pronunciation:
Trikalsilite
+ Pronunciation
Synonym:
ICSD 40445
PDF 12-197