0	FAYALITE (Magnesium Iron Silicate)
0	FEDORITE (Hydrated Sodium Potassium Calcium Silicate Fluoride Chloride Hydroxide)
*	FELDSPAR (Group)
0	FERBERITE (Iron Tungstate)
0	FERRO-EDENITE (Sodium Calcium Iron Magnesium Aluminum Silicate Hydroxide)
0	FERROGLAUCOPHANE (Sodium Iron Magnesium Aluminum Silicate Hydroxide)
0	FIEDLERITE (Lead Chloride Fluoride Hydroxide)
0	FLINT (variety of Quartz - Silicon Oxide)
0	FLUORAPATITE (the fluorine rich apatite)
Sale! 14	FLUORITE (Calcium Fluoride)
0	FLUORRICHTERITE (Sodium Calcium Magnesium Iron Silicate Hydroxide Fluoride)
0	FORSTERITE (Iron Magnesium Silicate)
0	FRANCKEITE (Lead Tin Iron Antimony Sulfide)
0	FRANKLINITE (Zinc Manganese Iron Oxide)
0	FUCHSITE (the chromium-rich muscovite)
0	FULGARITE (lightning created Lechatelierite, Silicon Dioxide)