A

Acanthite


Achroite


Actinolite


Adamite


Aegirine


Aegirine-Augite


Aenigmatite


Aeschynite-(Y)


Afghanite


Afwillite


Agardite Group


Ajoite


Akaganeite


Åkermanite


Alacránite


Albite


Allanite Group


Allanpringite


Alicewilsonite-(Y)


Allophane


Almandine (Garnet Supergroup)


Alstonite


Aluminium-bearing adamite


Alumochalcosiderite


Alumohydrocalcite


Alunite


Amesite


Amphibole Supergroup


Analcime


Anapaite


Anatase


Ancylite-(Ce)


Andalusite


Andersonite


Andradite (Garnet Group)


Angastonite


Anglesite


Ankerite ?


Annabergite


Annite


Anorthite


Antlerite


Antozonite (Fluorite)


Apatite


Apjohnite


Apophyllite


Aquamarine (Beryl Group)


Aragonite


Arfvedsonite


Armalcolite


Arsenic-bearing Vanadinite (formerly called Endlichite)


Arsendescloizite


Arseniosiderite


Arsenocrandallite


Arsenogorceixite


Arsenogoyazite


Arsenolite


Arsenopyrite


Arsentsumebite


Arthurite


Artinite


Artroeite


Asbecasite


Astrophyllite


Atacamite


Atelestite


Atencioite


Augite (Clinopyroxene Subgroup)


Aurichalcite


Austinite


Austinite (copper bearing)


Autunite


Axinite


Azoproite


Azurite