MINERALOGY
|
ATHENA
MINERALOGY |
| Mineral: | ILLITE |
| Formula: | K0.65Al2[]Al0.65Si3.35O10(OH)2 |
| Crystal System: | Monoclinic |
| Strunz Nr: | 8/H.13-30 |
| Group: | Mica group Interlayer-deficient mica. Dioctahedral |
| References: | AM 50 (1965), 411; CM 36 (1998), 905 |
| Type Locality: | Maquoketa Shale, Gilead, Calhoun Co., Illinois, USA |
| Comments: | Dioctahedral interlayer deficient-micas. [] = vacancy |
| Mineral: | ILLITE = a series name |
| Formula: | (K,H3O)(Al,Mg,Fe)2(Si,Al)4O10[(OH)2,H2O] (?) |
| Crystal System: | Monoclinic |
| References: | AM 50 (1965), 411; CM 36 (1998), 905 |
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[Athena]
