33^€

Crystallization of sphalerite and galena

Weight 165 gr

CHARACTERISTICS
Weight	165 gr
Size	60x50x50 mm
Reference	220807654
Mineral	mineral species Galena
Mineral 2	mineral Sphalerite
Category	Rocks and minerals
Group	Crystallization
Country	Bulgaria

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Formula PbS] GALENA
Pb	Lead	Poor metal	86.6%
S	Sulfur	Other no metal	13.4%
			100%
Galena is a lead sulfide mineral and is the primary lead ore mined worldwide. This mineral is distinguished by its crystallization in the cubic system, often as perfect cubes, although octahedral shapes can also be observed. Galena is recognizable by its bright metallic luster and lead-gray color. Its high density is a notable characteristic that sets it apart from other minerals. In geological context, galena forms primarily in hydrothermal environments, often in association with other minerals such as sphalerite, pyrite, and calcite. These hydrothermal deposits typically develop in veins or masses, where sulfur- and lead-rich fluids solidify at moderate temperatures. Galena is of significant economic importance as the primary source of lead, which is used in many industrial applications, from batteries to pigments. Due to its ability to contain traces of silver, galena is also mined for the extraction of this precious metal.
Formula ZnS] SPHALERITE
Zn	Zinc	Poor metal	64.06%
S	Sulfur	Other no metal	33.06%
Fe	Iron	Transition metal	2.88%
			100%
Sphalerite is a key mineral in the field of mineralogy, primarily composed of zinc sulfide. It typically occurs as cubic or tetrahedral crystals, often found in association with minerals such as galena and chalcopyrite. Its color ranges from brown to black, although rarer specimens may display red or yellow hues due to the presence of trace elements such as iron. This color variation makes it a sought-after mineral among collectors and mineral enthusiasts. The largest sphalerite deposits are located in regions such as North America, Central Europe, and Australia, making it a globally important mineral for zinc extraction. Geologists and mining engineers carefully study these deposits to optimize zinc extraction and production. Sphalerite is also valued for its unique optical properties. It has a high refractive index, giving it a diamond-like luster, often compared to that of diamonds. This characteristic makes sphalerite attractive for making jewelry and decorative objects.

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