Dioptase: Difference between revisions

Content deleted Content added
m Reverted 1 edit by Gaspsomaha (talk) to last revision by InternetArchiveBot
→‎History: Corrected meaning of name, some ce
 
Line 43:
Dioptase was used to highlight the edges of the eyes on the three [[Pre-Pottery Neolithic B]] [[lime plaster]] statues discovered at '[[Ain Ghazal]], known as [[Micah, Heifa and Noah]].<ref name=bmMHN>{{cite web |url=https://www.britishmuseum.org/explore/highlights/highlight_objects/me/l/lime_plaster_statues.aspx|title=Lime plaster statues |website=britishmuseum.org|publisher=British Museum|archive-date=May 11, 2013|archive-url=https://web.archive.org/web/20130511103233/https://www.britishmuseum.org/explore/highlights/highlight_objects/me/l/lime_plaster_statues.aspx|url-status=dead|accessdate=November 19, 2020}}</ref> These sculptures date back to about 7200 BC.<ref name=bmMHN />
 
Late in the 18th century, copper miners at the Altyn-Tyube (Altyn-Tube) mine, [[Karagandy Province]], [[Kazakhstan]]<ref name=Mindat/> thought they had found the [[emerald]] deposit of their dreams. They found fantastic cavities in [[quartz]] veins in a [[limestone]] rock, filled with thousands of lustrous transparent emerald-green crystals. The crystals were dispatched to [[Moscow]], [[Russia]], for analysis. However, the mineral's inferior hardness of 5 compared with emerald's greater hardness of 8 easily distinguished it. Eventually, in 1797, the [[mineralogist]] Fr. [[René Just Haüy]] (the famed French [[mineralogist]]) determined that the enigmatic Altyn-Tyube mineral was new to science and named it dioptase ([[Greek language|Greek]], ''dia'', "doublingthrough" and ''optos'', "visible"), alluding to the mineral's twointernal cleavage directionsplanes that arecan visiblebe seen inside unbroken crystals.<ref>{{Cite web |title=Dioptase |url=https://www.mindat.org/min-1295.html |website=mindat.org}}</ref>
 
==Occurrence==