Mineral Lab: Plagioclase Feldspar

Minerals with Willsey: Feldspars

15) Feldspars and Quartz

Minerals with Willsey: Olivine, Pyroxene, and Amphibole

Mineral Lab: Hematite

Mineral Lab: Potassium Feldspar

Potassium Feldspar

Diamonds and emeralds emerge from crevices in rocks after torrential rain

Minerals with Willsey: Hematite, Magnetite, Galena, and Pyrite

Mineral Lab: Hornblende (Amphibole)

Rock and Mineral Identification

Feldspar - Plagioclase vs Alkali / k-feldspar Mineralogy in hand specimen & thin section

Meteorites, second video of more interesting stones....

All About Feldspar ✨ - Amazing Mineral | Properties, Uses & More!

Rose Quartz & Feldspar Gemstones

Quartz vs. Quartzite

Mineral : Tectosilicates - Alkali Feldspars

Classifying igneous rocks | Describing composition and texture

Mineralogy: Lecture 48, Feldspars

Identifying Minerals -- Earth Rocks!

33. How to Identify Rocks