Siderite Crystal Cluster – Greenish-Brown Carbonate Mineral from China – Collector Specimen

Siderite is an iron carbonate mineral, often occurring in well-defined rhombohedral crystals with earthy tones ranging from brown to yellowish-green. This specimen from China shows sharp crystal faces and characteristic vitreous to pearly luster.

• Chemical formula: FeCO₃
• Crystal system: Trigonal
• Locality: China

Siderite is an important iron ore mineral and has also been long appreciated by mineral collectors for its aesthetic crystal forms. Chinese siderite specimens are particularly well-regarded for their sharp crystal definition and attractive colors.
This cluster makes a great addition to any carbonate mineral collection or as an educational example of crystal formation.
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