Feldspar

Wikimedia Commons

Feldspar

Minerals

Hardness: 6–6.5

Streak: White

...

BasaltGraniteObsidianRhyolite

Parent: Rocks & Minerals

Feldspar is a group of rock‑forming silicate minerals (plagioclase and potassium feldspar) with good cleavage; they dominate many igneous rocks and are abundant in metamorphic and sedimentary settings.

┬─┬ノ( º _ ºノ)