Amblygonite forms a series with " montebrasite ", the low fluorine endmember.
2.
Amblygonite occurs with spodumene, apatite, lepidolite, tourmaline, and other lithium-bearing minerals in pegmatite veins.
3.
Associated minerals include quartz, feldspar, spodumene, amblygonite, tourmaline, columbite, cassiterite, topaz and beryl.
4.
It is usually associated with lepidolite, beryl, quartz, albite, amblygonite, and spodumene of pegmatitic origin.
5.
It occurs associated with apatite, whitlockite, childrenite eosphorite, laueite, strunzite, stewartite, mitridatite, amblygonite and siderite.
6.
Its typical occurrence is in lithium-rich pegmatites in association with albite, spodumene, petalite, amblygonite, lepidolite and quartz.
7.
It occurs in association with eosphorite, moraesite, hurlbutite, beryllonite, amblygonite, apatite, tourmaline, topaz, muscovite, microcline and quartz.
8.
Brazilianite, NaAl 3 ( PO 4 ) 2 ( OH ) 4 is a hydrous sodium aluminium phosphate that forms through the metasomantic alteration of amblygonite-montebrasite.
9.
During the hydrothermal stage, the pegmatite containing the brazilianite is traversed by a late stage low temperature hydrothermal veins where amblygonite-montebrasite is altered to form brazilianite.
