Fluorite on Quartz with Bismuthinite
This is a very well balanced multi-mineral specimen, with a high-clarity fluorite cube perched on the single quartz point, included with metallic bismuthinite. The clarity and quality of the quartz gives us a great peek inside, where we can see the beautiful inclusions. From Yaogangxian Mine, China. Acquired Fall 2024. We recommend mounting this piece on a small acrylic base with hot glue, as pictured. The base is 1” x 1" and included with purchase.
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Fluorite is a highly prized mineral among collectors due to its remarkable range of colors, crystal clarity, and unique properties. This calcium fluoride mineral crystallizes in the isometric system, often forming well-defined cubes. Ill-defined cubes, and occasionally octahedral shapes. Its colors span a broad spectrum, including vivid purples, greens, blues, yellows, and colorless varieties, with some specimens showcasing multiple colors in striking bands or zones.
Many fluorite specimens are also fluorescent, glowing in shades of blue or purple under ultraviolet light, adding an extra layer of fascination. Found in hydrothermal veins, sedimentary deposits, and igneous rocks, notable sources of collectible fluorite include China, England, Mexico, and the United States. Its vibrant colors, distinct crystal forms, and fluorescent qualities make fluorite a standout addition to any mineral collection.
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Quartz, the most common mineral on earth, is celebrated for its diverse forms, widespread availability, and captivating beauty. Composed of silicon dioxide (SiO₂), quartz crystallizes in the hexagonal system, often forming six-sided prisms terminated with pyramidal ends. This mineral is remarkably hard, ranking 7 on the Mohs hardness scale, which makes it durable and suitable for various uses. Quartz comes in an array of colors and varieties, including clear prismatic crystals, purple amethyst, smoky quartz, agates, jaspers, and much more.
Collectors are particularly drawn to quartz's ability to form large, well-defined crystals and fascinating inclusions, such as rutile needles or chlorite phantoms. Found in a multitude of geological environments, from igneous and metamorphic rocks to hydrothermal veins, notable quartz localities include Brazil, Madagascar, the United States, and Switzerland. The sheer variety and beauty of quartz, combined with its robust nature, make it an essential and versatile addition to any mineral enthusiast's collection.
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There have been specimens coming out of the yaogangxian mine which are sold by Chinese dealers as bismuthinite. However, many people surmise that the mineral is actually jamesonite.
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