Publication details
Rare hydrated Mg-carbonates-hydroxides assemblage of serpentinite fissures in Hrubšice, western Moravia (Czech Republic): a genetic model of its formation
| Authors | |
|---|---|
| Year of publication | 2013 |
| Type | Article in Periodical |
| Magazine / Source | Neues Jahrbuch fur Mineralogie, Abhandlungen |
| MU Faculty or unit | |
| Citation | |
| Doi | http://dx.doi.org/10.1127/0077-7757/2013/0242 |
| Field | Geology and mineralogy |
| Keywords | artinite;hydromagnesite;brugnatellite;coalingite;fissure minerals;Raman spectrum;serpentinite;Moldanubicum;Bohemian Massif |
| Description | Low-temperature fissure Mg- (Fe-) hydrocarbonate mineralization was found in the Hrubšiceserpentinite body, Moravian Moldanubicum. It is formed by rare minerals (hydromagnesite, artinite, brugnatellite, coalingite), followed by aragonite, brucite, dolomite and calcite. Two main stages of crystallization have been recognised. The old stage of mineralization was relatively Fe-rich, with brugnatellite, coalingite and Fe-bearing brucite. The younger, more extensive Mg-rich stage, produced artinite and various morphological types of hydromagnesite. The youngest minerals of fissures are calcite, dolomite and aragonite. Mineral assemblages have formed from low-temperature solutions, which were enriched in Mg2+, at pH ~ 9, with relatively low Al activity, low fugacity of CO2 and temperature lower than 44 oC. |