0KAEMMERERITE (the chromium rich variety of cliniclore)
0KAOLINITE (Aluminum Silicate Hydroxide)
0KERMESITE (Antimony Oxysulfide)
0KERNITE (Hydrated Sodium Borate)
0KIDWELLITE (Hydrated Sodium Iron Phosphate Hydroxide)
0KIESERITE (Hydrated Magnesium Sulfate)
0KINOITE (Hydrated Calcium Copper Silicate)
0KNAUFITE (alternate name for VOLBORTHITE, Copper Vanadate Hydroxide)
0KOLWEZITE (Copper Cobalt Carbonate Hydroxide)
0KORNERUPINE (Magnesium Aluminum Iron Boro-silicate Hydroxide)
0KOTTIGITE (Hydrated Zinc Arsenate)
0KOVDORSKITE (Hydrated Magnesium Carbonate Phosphate Hydroxide)
0KTENASITE (Hydrated Copper Zinc Sulfate Hydroxide)
0KULANITE (Barium Iron Manganese Magnesium Aluminum Phosphate Hydroxide)
Sale! 1KUNZITE (variety of Spodumene)
0KUPLETSKITE (Potassium Sodium Manganese Iron Titanium Niobium Silicate Hydroxide)
0KUTNOHORITE (Calcium Magnesium Carbonate)
Sale! 6KYANITE (Aluminum Silicate)