Acuminite
Acuminite is a colorless mineral made from crystals. It is named for the Latin word "acuminis" (meaning "sharp point" or "spearhead") for the way the crystals are made. It is easily found in Greenland in the Ivigtut cryolite deposit. It is easily scratched with a copper penny.[1]
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.