MINERALOGY
|
|
ATHENA
MINERALOGY |
| Mineral: | BRAMMALLITE |
| Formula: | Na0.65Al2[]Al0.65Si3.35O10(OH)2 |
| Crystal System: | Monoclinic |
| Strunz Nr: | 8/H.13-20 |
| Group: | Mica Group Interlayer-deficient mica. Dioctahedral |
| References: | DAN Earth Sci. 208 (1973), 157; CM 36 (1998), 905 |
| Type Locality: | Llandybie, Dyfed, South Wales, GB |
| Comments: | Dioctahedral interlayer deficient-micas. [] = vacancy |
| Mineral: | BRAMMALLITE = a series name |
| Formula: | (Na,H3O)(Al,Mg,Fe)2(Si,Al)4O10[(OH)2,H2O] (?) |
| Crystal System: | Monoclinic |
| References: | DAN Earth Sci. 208 (1973), 157; CM 36 (1998), 905 |
| Type Locality: | Llandybie, Dyfed, South Wales, GB |
| Comments: | Na rich Illite |
Send comments to
Copyright © 1986, 1994, 2009 ATHENA - Pierre Perroud. All Rights Reserved.
