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Formula: Al
Native element, gold group
Specific gravity: 2.7
Hardness: 2 to 3½
Colour: Greyish white
Melting point: 660.32oC
Boiling point: 2466.85oC
Abundance: 8.23 % by mass in the Earth's crust, 56 ppm by mass in the Solar system
Environments
Plutonic igneous environments
Sedimentary environments
Hydrothermal environments
Native aluminium occurs in aluminium-rich rocks, in high-temperature hydrothermal
tin-tungsten
deposits and their alteration zones and in volcanic ash. Associated minerals include antimony,
cadmium, copper,
hematite, ilmenite,
iron, jarosite,
lead, magnetite,
moissanite, pyrite,
sulphur, tin and
zinc
(Mindat).
Localities
At the Getang Au-Sb deposit, Anlong county, Qianxi'nan, Guizhou, China, native aluminium is associated with
copper, sulphur and
jarosite
(HOM).
There are two co-type localities, the Billeekh Intrusion and Dike OB-255, both in the Sakha Republic, Russia. Here native aluminium
occurs in a gabbro-dolerite massif associated with
zinc, tin,
moissanite, lead,
iron, copper,
cadmium and antimony
(HOM, Mindat).
At the Tolbachik volcano, Kamchatka Krai, Russia, native aluminium is associated with magnetite,
ilmenite, hematite,
pyrite and iron
(HOM).
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