Feldspar: Columbite and Potassium Feldspar
Columbite, Potassium Feldspar Columbite, Potassium Feldspar Columbite, Potassium Feldspar Feldspar: Columbite and Potassium Feldspar Renfrew Co., Quadeville, Ontario 2025: Box #102 – Various West Friendship 12.73 ounces 360 grams 1800 carats M.C. Brown Collection Gem Miners Howard County Fairgrounds West Friendship, Maryland 4 June 2022 2025-102-Various West Friendship 2022-West-Friendship-6-4 *
