Magnesite
Magnesite is a carbonate mineral prized by collectors for its exceptional color range, with notable Chinese occurrences.
About Magnesite
Magnesite is classified as a carbonate mineral in the calcite group and has the chemical formula MgCO3. It crystallizes in the trigonal system and is one of the most visually varied minerals in the collector market.
Identification & care
Crystals commonly develop as rhombohedral crystals (rare — prized); usually massive, granular, compact, cryptocrystalline, fibrous. Its color range is broad, including white, colorless, grayish, yellowish, and brownish. The luster is vitreous, silky (massive), dull (earthy), the streak is white, and specimens range from transparent to translucent. The cleavage is perfect on {10-14}. The fracture is conchoidal, which aids identification.
Collector context
Collector notes
Magnesite holds a steady place in systematic mineral collections. Documented Chinese occurrences are recorded at Bayan Obo deposit, among others.