Mineral Specimen #4911 Siderite on Calcite and Quartz
Cirotan mine, Cikotok Gold Dist., Banten Prov., Java, Indonesia
8.7 x 8 x 4.7 cm
Light olive green colored Siderite crystals completely cover rhombahedral Calcite crystals and Quartz crystals. The Siderite crystals have a good, sparkly luster. Although this is a very large, producing Gold mine, specimens are very seldom available (none have been posted on mindat). I have heard the miners are subject to losing their jobs if caught removing specimens.
Flaws: One of the Quartz crystals at the corner of the largest, topmost Calcite crystals is missing. There are two places where the layer of Siderite crystals is missing.
This mineral is also found in the following galleries: Minerals From Asia | Carbonates | Calcite | Quartz | Minerals Priced Between 100 and 199 Dollars