Lepidolite

Hardness: 2.5-3 on Mohs scale. Color: Lilac, pink, purple-gray, or white; often with a pearly luster. Luster: Pearly to vitreous. Crystal structure: Monoclinic, typically found in scaly aggregates or massive forms, less commonly in distinct pseudo-hexagonal crystals. Cleavage: Perfect basal cleavage. Specific Gravity: 2.8-2.9.

Lepidolite is a lithium-rich mica mineral that forms during the late stages of pegmatite crystallization, particularly in lithium-rich granitic pegmatites. It is an indicator mineral for the presence of lithium. It can also be found in some hydrothermal veins and high-grade metamorphic rocks.

Lepidolite is the most common lithium-bearing mineral and historically has been a significant source of lithium. Lithium is used in batteries, ceramics, glass, and lubricants. As a gemstone, it is popular in jewelry (often cabochons or beads like in the image) due to its attractive color and shimmering luster. It is also collected by mineral enthusiasts.

The name Lepidolite comes from the Greek word 'lepidos,' meaning 'scale,' referring to its typical scaly appearance. It is often associated with other minerals like tourmaline, topaz, spodumene, and amblygonite. It is sometimes referred to as 'mica of tranquility' due to its purported calming properties in new age and holistic circles.

In the field, lepidolite can be identified by its distinctive lilac-to-pink color, pearly luster, and perfect basal cleavage, which allows it to be split into thin, flexible, elastic flakes. It is softer than most common minerals. Common locations include Brazil, Afghanistan, Russia (Urals), Zimbabwe, United States (California, Maine, New Mexico), and Western Australia. Collectors often seek out well-formed crystal aggregates or material suitable for polishing into cabochons and beads.