Mica Flakes on Matrix. From Colorado. Great piece to start a collection or add to an existing one!
Found this hiking in jefferson county, Colorado. What is this rock? : r/whatsthisrock
Raw Muscovite Mica Specimen, 1 - Geologist Selected Samples - Eisco L — Eisco Labs
My Mineral Gallery
lepidolite mica crystals on matrix OHIO CITY COLORADO 1965 weighs over 3 pounds
lepidolite mica crystals on matrix OHIO CITY COLORADO 1965 weighs over 3 pounds
Full article: Forty-Fourth Rochester Mineralogical Symposium: Contributed Papers in Specimen Mineralogy—Part 2
List of minerals - Wikipedia
Mica mineral hi-res stock photography and images - Page 2 - Alamy
Mineral Questions - Rocks, Minerals, Gems & Geology
Colorado Mica specimen
How to Identify Common Minerals - Geology In
Mica mineral hi-res stock photography and images - Page 2 - Alamy