Klockmannite
Klockmannite is a rare copper selenide mineral with the chemical formula CuSe. It crystallizes in the hexagonal crystal system and is classified within the Strunz mineral classification as 2.CA.05b. This mineral is typically metallic in luster and exhibits a dark red to black color. It has a relatively low hardness on the Mohs scale and a moderate to high density. Klockmannite is part of the sulfide mineral group, though it contains selenium instead of sulfur. It is known for its distinct chemical composition and is of interest to mineralogists due to its rarity and unique properties.
Composition
- SeSelenium55.4%
- CuCopper44.6%
Overview
Klockmannite is a rare copper selenide mineral with the chemical formula CuSe. It crystallizes in the hexagonal crystal system and is classified within the Strunz mineral classification as 2.CA.05b. This mineral is typically metallic in luster and exhibits a dark red to black color. It has a relatively low hardness on the Mohs scale and a moderate to high density. Klockmannite is part of the sulfide mineral group, though it contains selenium instead of sulfur. It is known for its distinct chemical composition and is of interest to mineralogists due to its rarity and unique properties.
Etymology
Klockmannite is named after Friedrich Klockmann, a German mineralogist. The mineral was recognized and named in his honor, though the exact year of its discovery is not specified.
How to recognize it
Klockmannite can be identified by its metallic luster, dark red to black color, and hexagonal crystal structure. It has a relatively low hardness on the Mohs scale, though the exact value is not specified. The mineral can be distinguished from other copper selenides by its chemical composition and crystal system. It is often confused with other metallic copper minerals, but its unique properties help in accurate identification.
Trivia
Klockmannite is notable for its rarity and the presence of selenium in its chemical composition, which is uncommon in mineral species. It is one of the few naturally occurring copper selenides, making it a subject of interest for mineralogical research. Its hexagonal crystal system is also a distinguishing feature among copper minerals.
Indicative prices
Klockmannite is a rare mineral and is not typically available in the gem or jewelry market. Prices for mineral specimens, if available, are indicative and can vary by source and quality. High-quality, well-formed crystals may be valued in the hundreds to thousands of euros or dollars, depending on origin, size, and clarity.