菱マンガン鉱
1. RhodochrositeRhodochrosite is a manganese carbonate mineral with chemical composition MnCO3. In its (rare) pure form, it is typically a rose-red color, but impure specimens can be shades of pink to pale brown. The streak is white. Its Mohs hardness varies between 3.5 and 4. Its specific gravity is 3.5 to 3.7. It crystallizes in the trigonal system. The cleavage is typical rhombohedral carbonate cleavage in three directions. Crystal twinning often is present.
Read “Rhodochrosite” on English Wikipedia
Read “菱マンガン鉱” on Japanese Wikipedia
Read “Rhodochrosite” on DBpedia
Read “Rhodochrosite” on English Wikipedia
Read “菱マンガン鉱” on Japanese Wikipedia
Read “Rhodochrosite” on DBpedia
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