| Title | Cave Name |
|---|---|
| Alum-(Na) |
Alum Cave, Vulcano Island, Sicily, Italy |
| Aluminite |
Mbobo Mkulu Cave, South Africa |
| Aluminocopiapite |
Alum Cave, Vulcano Island, Sicily, ltaly |
| Alunogen |
Grotta dello Zolfo, Italy |
| Ammoniojarosite |
Cueva Alfredo Jahn, Venezuela |
| Anhydrite |
Diana Cave, Romania |
| Aphthitalite |
Toppin Hill Cave, Western Australia |
| Archerite |
Petrogale Cave, Western Australia |
| Ardealite |
Cioclovina Cave, Romania |
| Arnhemite |
Arnhem Cave, Namibia - mineral species not approved by IMA |
| Arseniosiderite |
Tyuya Muyun Caves, Kyrgyzstan |
| Artinite |
Shopov's cave system, Bulgaria |
| Asbolane |
Tyuya-Muyun Cave, Kirghistan |
| Atacamite |
Jingemia Cave, Western Australia, Australia |
| Aubertite |
Alum Cave, Vulcano Island, Sicily, Italy |
| Aurichalcite |
Blanchard mine caves, Bingham, New Mexico, USA |
| Azurite |
several Copper Queen Mine caves, Bisbee, Arizona, USA |