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Lepidolite is a lilac-gray or rose-colored member of the mica group of minerals with chemical formula K(Li,Al) 3 (Al,Si,Rb) 4 O 10 (F,OH) 2. [ 2 ] [ 3 ] It is the most abundant lithium -bearing mineral [ 4 ] and is a secondary source of this metal.
Etched carnelian beads have been found from female Saka burials dated 8th-6th century BCE in Pamir, Tajikistan, all likely imported from Ancient Pakistan. [47] Etched carnelian beads, probably manufactured in Iran or Central Asia where found in the tomb of Saka tomb of Arzhan-2, suggesting trade exchanges with the south. [48]
The Chief's bead was about the size of a currant or large pea and seldom perfectly round. [5] They were normally 2 or 3 carats in size. The beads were measured at 50 to 70 against the weight of the English Soho Mint penny, close to the modern ounce and were traded by the fathom or by the yard. [1]
Melia azedarach, commonly known as the chinaberry tree, [3] pride of India, [4] bead-tree, Cape lilac, [3] syringa berrytree, [3] Persian lilac, [3] Indian lilac, or white cedar, [5] is a species of deciduous tree in the mahogany family, Meliaceae, that is native to Indomalaya and Australasia.
It occurs in lithium-bearing pegmatites with spodumene, lepidolite, and tourmaline. Petalite is an important ore of lithium, and is converted to spodumene and quartz by heating to ~500 °C and under 3 kbar of pressure in the presence of a dense hydrous alkali borosilicate fluid with a minor carbonate component. [ 8 ]
Spodumene is a pyroxene mineral consisting of lithium aluminium inosilicate, Li Al(Si O 3) 2, and is a commercially important source of lithium.It occurs as colorless to yellowish, purplish, or lilac kunzite (see below), yellowish-green or emerald-green hiddenite, prismatic crystals, often of great size.