222 - Lepidolite

ID	222
Mineral	Lepidolite
Location	Minas Gerais - Brazil
Fluorescence	LW-UV: close SW-UV: close
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ID	2380
Long ID	1:1:2380:7
IMA Status	0
Entry type	4
Description	A Li-rich mica in, or close to, the so-called Polylithionite-Trilithionite series. Compare also fluorluanshiweiite and luanshiweiite. The original lepidolite came from Rožná pegmatite, Žďár nad Sázavou, Vysočina Region, Moravia (Mähren; Maehren), C...
Occurrence	Granite pegmatite
Other Occurrences	May be found in aplites associated with granite pegmatite. rarely found in hydrothermal veins and extremely rarely in granite contact zones.
Industrial	Ore of lithium, cesium, and rubidium.
Diapheny	Transparent,Translucent
Cleavage	{001} perfect
Tenacity	elastic
Colour	Pink, light purple, light rose red, other colors possible but are rare.
Hardness (min)	2.5
Hardness (max)	3.5
About the name	Named in 1792 by Martin Klaproth from the Greek words lepidos for "scale" and lithos for "stone".
Streak	white
Crystal System	Monoclinic
Cleavage Type	Perfect
Fracture type	Micaceous
UV	Frequently fluoresces medium intensity of creamy white to pale yellow. Sometimes yellow.
shortcode_ima	Lpd
Group	Trioctahedral mica

Lepidolite