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huntite : ウィキペディア英語版
huntite

Huntite is a carbonate mineral with the chemical formula Mg3Ca(CO3)4.〔 Huntite crystallizes in the trigonal system and typically occurs as platy crystals and powdery masses.
==Discovery==
In 1953 a paper by George Faust〔()〕 announced the discovery of a new carbonate mineral found in Currant Creek, Nevada (USA). Faust acknowledged that the mineral probably had been discovered previously, but had been misidentified as impure magnesite by W. E. Ford in 1917. Faust named the new mineral "huntite" in honour of his former teacher, Walter Frederick Hunt (1882–1975)() , Professor of Petrology at the University of Michigan. Faust carried out analyses of the mineral, and found amongst others that in differential thermal analysis huntite showed two endothermic peaks, which could be attributed to the dissociation of MgCO3 and CaCO3 respectively. Chemical analyses showed huntite to consist of Mg3Ca(CO3)4.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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