| |
 |
Alum-(K) Mineral Data
|
|
|
General Alum-(K) Information
|
 Chemical Formula: |
KAl(SO4)2•12(H2O) |
| Composition: |
Molecular Weight = 474.39 gm |
| |
Potassium 8.24 % K 9.93 % K2O |
| |
Aluminum 5.69 % Al 10.75 % Al2O3 |
| |
Hydrogen 5.10 % H 45.57 % H2O |
| |
Sulfur 13.52 % S 33.75 % SO3 |
| |
Oxygen 67.45 % O |
| |
______ ______ |
| |
100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
KAl(SO4)2•12(H2O) |
| Environment: |
Derived from the oxidation of sulfide minerals and potassium-bearing minerals. |
| IMA Status: |
Valid Species (Pre-IMA) 1875 |
| Locality: |
Vesuvius, Italy. Alum Cave, Tennessee, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the element K and the Latin, alumen. |
| Synonym: |
Native Alum |
| |
Potash Alum |
| |
Potassium-alum - Renamed to Alum-(K) by Mineralogical Record, v39 (2008), p131 |
| |