5810 Solongoite, Fuka mine, Fuka, Bitchū, Takahashi City, Okayama Prefecture, Japan
Colourless to white massive material, partially fluorescent pink under longwave UV (likely calcite as it bubbles readily in vinegar – see last photo). 23x17x8mm. Stack of 45 images (white light) and 21 (UV). Click on...