Can fayalite orthaclase but not topaz?

Answer 1

Yes..in a high definition the Fayalite can be able to scratch the Orthoclase but not the topaz. If you look on the Mohs scale, the Orthoclase is not harder than the Topaz. So, in clear words, yes!!

Answer 2

Fayalite and orthoclase are both silicate minerals commonly found in igneous rocks, while topaz is a non-silicate mineral typically found in pegmatite veins. The geological conditions that favor the formation of fayalite and orthoclase may not be suitable for the formation of topaz.

Answer 3

Fayalite has a hardness of 6.5-7 on the Mohs scale. Therefore it scratches orthoclase (hardness 6), but not topaz (hardness 8).

Answer 4

quartz