0ACANTHITE (Silver Sulfide)
0ACTINOLITE (Calcium Magnesium Iron Silicate Hydroxide)
0ADAMITE (Zinc Arsenate Hydroxide)
0AEGIRINE (Sodium Iron Silicate)
0AESCHYNITE (Yttrium Calcium Iron Thorium Titanium Niobium Oxide Hydroxide)
0AGATE (variety of Quartz - Silicon Oxide)
0AJOITE (Hydrated Potassium Sodium Copper Aluminum Silicate Hydroxide)
0ALBITE (Sodium Aluminum Silicate)
0ALEXANDRITE (variety of Chrysoberyl- Beryllium Aluminum Oxide)
0ALLANITE (Calcium Cerium Lanthanum Yttrium Aluminum Iron Silicate Hydroxide)
0ALLUVIAL (a type of unconsolidated sediments)
0ALMANDINE (Iron Aluminum Silicate)
0ALTAITE (Lead Telluride)
0ALUMINUM (Al)
0ALUNITE (Potassium Aluminum Sulfate Hydroxide)
0AMBER (Succinite: fossilized tree resin)
0AMBLYGONITE (Lithium Sodium Aluminum Phosphate Fluoride Hydroxide)
Sale! 1AMETHYST (variety of Quartz- Silicon Oxide)
0ANALCIME (Hydrated Sodium Aluminum Silicate)
0ANAPAITE (Hydrated Calcium Iron Phosphate)
0ANATASE (Titanium Oxide)
Sale! 2ANDALUSITE (Aluminum Silicate)
0ANDERSONITE (Hydrated Sodium Calcium Uranyl Carbonate)
0ANDESINE (Sodium Calcium Aluminum Silicate)
0ANDESITE (an extrusive igneous rock)
0ANDRADITE (Calcium Iron Silicate)
0ANGELITE (trade name for Anhydrite)
0ANGLESITE (Lead Sulfate)
0ANHYDRITE (Calcium Sulfate)
0ANKERITE (Calcium Iron Carbonate)
0ANNABERGITE (Hydrated Nickel Arsenate)
0ANORTHITE (Calcium Aluminum Silicate)
0ANORTHOSITE (a plutonic igneous rock)
0ANTHOPHYLLITE (Magnesium Iron Silicate Hydroxide)
0ANTIMONY (Sb)
0ANTLERITE (Copper Sulfate Hydroxide)
0APATITE (Calcium (Fluoro, Chloro, Hydroxyl) Phosphate)
Sale! 3APOPHYLLITE (Hydrated Potassium Calcium Silicate Hydroxide Flouride)
0AQUAMARINE (variety of Beryl, Berylium Aluminum Silicate)
0ARAGONITE (Calcium Carbonate)
0ARFVEDSONITE (Sodium Iron Magnesium Silicate Hydroxide)
0ARGENTITE (Silver Sulfide)
0ARGYRODITE (Silver Germanium Sulfide)
Sale! 1ARSENIC (As)
Sale! 1ARSENOPYRITE (Iron Arsenide Sulfide)
0ARSENTSUMEBITE (Lead Copper Arsenate Sulfate)
0ARTHURITE (Hydrated Copper Iron Arsenate Phosphate Sulfate)
0ARTINITE (Hydrated Magnesium Carbonate Hydroxide)
0ASTEROIDS (primordial stony or metallic rocks in space)
0ASTROPHYLLITE (Potassium Iron Titanium Silicate Hydroxide)
0ATACAMITE (Copper Chloride Hydroxide)
0AUGELITE (Aluminum Phosphate Hydroxide)
0AUGITE (Calcium Sodium Magnesium Aluminum Iron Titanium Silicate)
0AURICHALCITE (Zinc Copper Carbonate Hydroxide)
0AUSTINITE (Calcium Zinc Arsenate Hydroxide)
0AUTUNITE (Hydrated Calcium Uranyl Phosphate)
0AXINITE (Calcium Iron Magnesium Manganese Aluminum Boro-Silicate Hydroxide)
Sale! 1AZURITE (Copper Carbonate Hydroxide)