Publication details
Hematite, hexyhydrite and picromerite group from the mine waste of the coal mine Kukla in Oslavany
| Authors | |
|---|---|
| Year of publication | 2006 |
| Type | Article in Periodical |
| Magazine / Source | Mineralogia Polonica |
| MU Faculty or unit | |
| Citation | |
| Field | Geology and mineralogy |
| Keywords | hematite;hexahydrite;picromerite;Kukla coal mine;konyaite;spinel;corundum;anhydrite;aragonite;calcite;gypsum |
| Description | Secondary mineralization on the waste tip of the Kukla coal mine in Oslavany was studied.Chemistry of hematite and corundum indicates relatively high temperature of their formation during the burning of the mine waste, ranging from 900 to 1100 oC. Hematite from the waste tip in Oslavany contains up to 8.16 % of alumina, corundum up to 8.07 % of Fe2O3. The higher temperature has caused easier substitution and the rapid cooling of the melt averted the unmixing. Our studies show that Mg-bearing sulphates (especially hexahydrite) are dominant on the surface of the waste tip, especially hexahydrite. Mixed-cation sulphates (konyaite and picromerite) occur in a small amount. They are unstable and in time they change. |
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