Knowledge base

Dioptase

Dioptase is an unforgettable mineral, immediately recognized by its intense, jewel-like color and delicate crystal habits. For collectors, geologists and lapidary artists alike, this copper-bearing mineral embodies a blend of scientific interest and aesthetic value. The following article explores dioptase from multiple angles: its nature and properties, the geological settings that produce it, its uses […]

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Datolite

Datolite is a modest but fascinating mineral that rewards close attention from collectors, gem cutters, and geoscientists alike. Often overlooked beside flashier minerals, datolite occupies an intriguing niche at the intersection of volcanic processes, hydrothermal activity, and low-temperature mineralization. This article explores its identity, where it appears in nature, practical and scientific applications, and a

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Danburite

Danburite is a mineral that fascinates both scientists and enthusiasts for its elegant crystal forms, gem-quality transparency, and intriguing history. In this article I will explore its composition, structure, global occurrences, practical and decorative uses, and subjects often considered interesting by collectors and lapidaries. The narrative will combine mineralogical facts with cultural and practical perspectives

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Cuprite

Cuprite is a striking and scientifically important mineral whose vivid red color and distinctive crystalline forms have captured the attention of collectors, miners, and researchers alike. Known chemically as copper(I) oxide, it occupies a central role in the supergene zones of copper deposits and has found renewed interest in modern materials science. This article explores

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Crocidolite

Crocidolite has a complex and often controversial place in the history of geology, industry and public health. This article explores the mineral from multiple angles: its chemical nature and appearance, where it forms and is mined, how humans have used it and reacted to its risks, and some lesser-known or curious aspects connected to the

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Creedite

Creedite is a delicate and visually striking mineral that captures the interest of collectors, mineralogists, and geologists alike. While not a major industrial commodity, it plays a valuable role in telling the story of the geochemical environments that form unusual fluoride- and sulfate-bearing assemblages. This article explores creedite’s appearance and habits, the geologic settings where

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Covellite

The mineral covellite (chemical formula CuS) is a striking and scientifically rich copper sulfide that has fascinated mineralogists, collectors and materials scientists for more than a century. With its deep indigo-blue to metallic black color, layered crystal habit and unusual electronic behavior, covellite occupies a special place at the intersection of traditional economic geology and

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Cordierite

Cordierite is a often-overlooked but technologically important mineral and ceramic phase with a mix of geological intrigue and practical value. This article explores its identity, where it forms in nature, how it is harnessed in industry, and several fascinating aspects that bridge mineralogy, materials science, and everyday technology. Expect discussion of its structure, properties such

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Colemanite

Colemanite is a mineral that has played a quiet but indispensable role in the global supply of boron compounds. As a hydrated calcium borate, it occupies a specific niche in both the geological record and in modern industry. This article examines the mineral’s **structure**, natural **occurrence**, methods of **extraction** and **processing**, and the many **applications**

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Cobaltite

Cobaltite is a striking mineral that occupies a small but important place in the story of industrial metals, mineralogy and environmental geology. With a characteristic metallic sheen and a chemical formula that binds cobalt with arsenic and sulfur, cobaltite is both a scientific curiosity and an economically significant ore mineral. This article explores where cobaltite

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