| |
| |
Amblygonite |
 | | The mineral is thus not unlike felspar[?] in general appearance, but it is readily distinguished from this by its chemical characters, being an aluminium and lithium fluophosphate[?], Li(AlF)PO, with part of the lithium replaced by sodium and part of the fluorine by hydroxyl. |
 | | Crystals, which are rarely distinctly developed, belong to the anorthic system, and frequently show twin lamellae. |
 | | It contains about 10% of lithia[?], and, since 1886, has been utilized as a source of lithium salts, the chief commercial sources being the Montebras deposits, and later the Californian. |
| www.ebroadcast.com.au /lookup/encyclopedia/am/Amblygonite.html (236 words) |
|