Calcite
Kurohai village, Choshi city, Chiba pref., Japan
Source for Quick lime and Sodium cyanide
Field of view: 10 mm. Crystals of calcite. The transparent grains are calcite covered with an opaque white crust. The pale brown parts in the interstices of calcite crystals are mud.
Recovered from an open space of a calcite vein in a high-Mg andesite lava.
Other localities
- Chichibu Mine (Hydrothermal Skarn, Scalenohedral)
- Horado Mine (Hydrothermal Skarn, Granular)
- Nakatatsu Mine (Hydrothermal Skarn, Rhombohedral)
- Waga-Sennin Mine (Metasomatic Skarn, Scalenohedral)
- Choshi (Andesite, Granular)
- Kodomari (Hydrothermal, Scalenohedral)
- Shobusawa (Au-Ag vein, Scalenohedral)
- Mount Futago (Limestone, Rhombohedral)
- Koma (Calcareous sandstone, Twin)
- Cotswolds (Oolitic limestone, Granular)
- Iwakake (PrP facies, Scalenohedral)