sedimentary
Leopard Skin Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Hardness 6.5-7 on Mohs scale; vitreous to waxy luster; mottled pattern featuring cream, tan, brown, pink, and dark grey spots resembling leopard fur; trigonal crystal system; smooth polished surface with no distinct cleavage.
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Physical properties
Hardness 6.5-7 on Mohs scale; vitreous to waxy luster; mottled pattern featuring cream, tan, brown, pink, and dark grey spots resembling leopard fur; trigonal crystal system; smooth polished surface with no distinct cleavage.
Formation & geological history
Formed through the deposition of silica-rich fluids filling cavities and veins in volcanic or sedimentary rocks over millions of years. The distinctive orbicular spotted patterns are caused by localized concentration of iron oxides and manganese inclusions.
Uses & applications
Used primarily in lapidary work, jewelry making (cabochons, beads, pendants), wire-wrapping, metaphysical practices, and decorative tumbled stone collections.
Geological facts
Despite being called jasper, Leopard Skin Jasper is technically an orbicular rhyolite (an igneous rock composed of silica-rich volcanic material) in many geological contexts.
Field identification & locations
Easily identified by its distinctive leopard-like spots and earthy color tones. Tumbled stones like this are commonly found in Mexico, Peru, Brazil, and South Africa, and are very popular among rockhounds and mineral collectors.
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