4/7/2023 0 Comments Cleavage english patch![]() ![]() The name ore (Erz, Ertz) was applied to the metallic minerals, the gangue or to the vein material as a whole. Tomkeieff (1941) suggested an etymology for quartz: "The Saxon miners called large veins - Gänge, and the small cross veins or stringers - Querklüfte. Agricola used the spelling "quarzum" (Agricola 1530) as well as "querze", but Agricola also referred to "crystallum", "silicum", "silex", and silice". The earliest printed use of "querz" was anonymously published in 1505, but attributed to a physician in Freiberg, Germany, Ulrich Rülein von Kalbe (a.k.a. The root words κρύοσ signifying ice cold and στέλλειυ to contract (or solidify) suggest the ancient belief that kristallos was permanently solidified ice. The varietal names, rock crystal and bergcrystal, preserve the ancient usage. The most ancient name known is recorded by Theophrastus in about 300-325 BCE, κρύσταλλος or kristallos. Quartz has been known and appreciated since pre-historic times. ![]()
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