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Why Are Australia’s Pink Lakes So Pink?

Australia’s pink lakes , such as Lake Hillier , derive their color from a unique combination of geological, climatic, and bi…

Vitreous Luster Definition and Mineral Examples

Vitreous luster describes how a mineral reflects light, resembling glass. Derived from the Latin vitreus (meaning " gla…

New Rock Type Made From Human Trash Discovered

Industrial Waste Is Becoming Rock in Just Decades, Scientists Find Scientists have identified a novel rock type that has for…

Purple Fluorite: Color & Properties

Purple fluorite is the violet to deep-purple variety of the halide mineral fluorite (calcium fluoride, CaF₂). Its vivid col…

What is Boulder Opal

Boulder opal is a distinct variety of precious opal that forms within the cavities, seams, or fissures of ironstone boulde…