Lepidolite with Turquoise/Chrysocolla
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) and Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O) · Semi-Precious Gemstone / Mineral Specimen
Crystal System
Monoclinic (Lepidolite) and Monoclinic/Amorphous (Chrysocolla); typically massive or botryoidal
Mineral Group
Silicates (Phyllosilicates)
Chemical Formula
K(Li,Al)3(Al,Si)4O10(F,OH)2 + Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O
Formation Process
Hydrothermal and Pegmatitic; Lepidolite forms in granitic pegmatites while secondary copper minerals like Chrysocolla form in oxidation zones.
About This Crystal
A mixed mineral specimen featuring lilac to pinkish-purple lepidolite mica flakes embedded in a matrix, bordered by a vibrant blue-green vein of chrysocolla or turquoise-colored silica. Luster ranges from pearly (lepidolite) to waxy/dull (chrysocolla).
Physical Characteristics
Color: Purple, pink, blue-green; Streak: White; Fracture: Micaceous/Uneven; Tenacity: Brittle; Lepidolite exhibits micaceous cleavage in one direction.
Optical Properties
Refractive Index: 1.525-1.587 (Lepidolite); Birefringence: 0.018-0.038; Usually lacks significant pleochroism in massive form.
Hardness & Durability
Origin Region
Brazil, Madagascar, Afghanistan, USA (California, Maine)
Hardness & Durability
Mohs Hardness: 2.5-3.5 for Lepidolite; 2.0-4.0 for Chrysocolla. Low durability; prone to scratching and cleavage splitting.
Care & Maintenance
Avoid water immersion, ultrasonic cleaners, and harsh chemicals. Store separately from harder stones like quartz. Clean only with a dry, soft cloth.
Rarity & Value
Relatively Common; Value is based on color saturation and the aesthetic contrast between the purple and blue-green minerals.
Special Characteristics
Lepidolite contains high rubidium and lithium concentrations; the specimen shows a distinct color-blocked boundary between two different chemical environments.
Lore & History
Traditionally known as 'Stones of Transition' in folklore; historically mined for lithium content. Associated with emotional balance and calm in contemporary crystal healing traditions.