Crossword clues for lepidolite
The Collaborative International Dictionary
Mica \Mi"ca\, n. [L. mica crumb, grain, particle; cf. F. mica.] (Min.) The name of a group of minerals characterized by highly perfect cleavage, so that they readily separate into very thin leaves, more or less elastic. They differ widely in composition, and vary in color from pale brown or yellow to green or black. The transparent forms are used in lanterns, the doors of stoves, etc., being popularly called isinglass. Formerly called also cat-silver, and glimmer.
Note: The important species of the mica group are: muscovite, common or potash mica, pale brown or green, often silvery, including damourite (also called hydromica and muscovy glass); biotite, iron-magnesia mica, dark brown, green, or black; lepidomelane, iron, mica, black; phlogopite, magnesia mica, colorless, yellow, brown; lepidolite, lithia mica, rose-red, lilac. [1913 Webster] Mica (usually muscovite, also biotite) is an essential constituent of granite, gneiss, and mica slate; biotite is common in many eruptive rocks; phlogopite in crystalline limestone and serpentine.
Mica diorite (Min.), an eruptive rock allied to diorite but containing mica (biotite) instead of hornblende.
Mica powder, a kind of dynamite containing fine scales of mica.
Mica schist, Mica slate (Geol.), a schistose rock, consisting of mica and quartz with, usually, some feldspar.
Wiktionary
n. (context mineralogy English) A pale lilac mica mineral that is a mixed basic fluoride and aluminosilicate of potassium, lithium and aluminium
WordNet
n. a mineral of the mica group; an important source of lithium
Wikipedia
Lepidolite is a lilac-gray or rose-colored member of the mica group with formula K(Li,Al,Rb)(Al,Si)O(F,OH). It is a secondary source of lithium. It is a phyllosilicate mineral and a member of the polylithionite-trilithionite series.
It is associated with other lithium-bearing minerals like spodumene in pegmatite bodies. It is one of the major sources of the rare alkali metals rubidium and caesium. In 1861 Robert Bunsen and Gustav Kirchhoff extracted of lepidolite and yielded a few grams of rubidium salts for analysis, and therefore discovered the new element rubidium.
It occurs in granite pegmatites, in some high-temperature quartz veins, greisens and granites. Associated minerals include quartz, feldspar, spodumene, amblygonite, tourmaline, columbite, cassiterite, topaz and beryl.
Notable occurrences include Brazil; Ural Mountains, Russia; California, United States; Tanco Mine, Bernic Lake, Manitoba, Canada; and Madagascar.
lepidolite from Itinga, Minas Gerais, Brazil. Size: 6.1 x 4.9 x 3.1 cm lepidolite "books" from Himalaya Mine, Mesa Grande District, San Diego County, California, US. Size: 4.8 x 3.9 x 3.5 cm
Usage examples of "lepidolite".
It was a year before he found anything worth spitting at, and even that was only a scratchy handful of lepidolite, lithium ore.
Then came the time he came across something remotely promising, a tiny asteroid that held swirls of lepidolite and pollucite and spodumene and half a dozen other interesting ores.
There was lepidolite here, chock-full of lithium and run through with gallium as well.