• Boulangerite Calcite Naturally Terminated Yugoslavia 328g
  • Boulangerite Calcite Naturally Terminated Yugoslavia 328g
  • Boulangerite Calcite Naturally Terminated Yugoslavia 328g
  • Boulangerite Calcite Naturally Terminated Yugoslavia 328g
  • Boulangerite Calcite Naturally Terminated Yugoslavia 328g
  • Boulangerite Calcite Naturally Terminated Yugoslavia 328g
  • Boulangerite Calcite Naturally Terminated Yugoslavia 328g
  • Boulangerite Calcite Naturally Terminated Yugoslavia 328g
  • Boulangerite Calcite Naturally Terminated Yugoslavia 328g
  • Boulangerite Calcite Naturally Terminated Yugoslavia 328g
1 10

BC328g

Boulangerite Calcite Naturally Terminated Yugoslavia 328g

£350.00 GBP
£350.00 GBP
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Boulangerite Calcite Naturally Terminated Yugoslavia 328g

Mineral Name: Boulangerite Chemical Formula: Pb5Sb4S11 - Lead Antimony Sulfide Color: Boulangerite is typically dark steel-gray to black in color. It may exhibit metallic luster, and the crystals often have a prismatic or fibrous habit. Crystal System: Monoclinic Hardness: 2.5 on the Mohs scale Luster: Metallic Transparency: Opaque Specific Gravity: 5.75 - 6.0 Cleavage: Indistinct Fracture: Irregular to subconchoidal Streak: Black Occurrences: Boulangerite is commonly found in hydrothermal veins associated with other sulfide minerals, especially in lead-zinc ore deposits. Notable occurrences include Germany, Romania, Mexico, Peru, and the United States. Notable Localities: Some significant boulangerite localities include the Herja mine in Romania, the Trepča Mines in Kosovo, and the Sweetwater Mine in Missouri, USA. Formation: Boulangerite typically forms in hydrothermal environments, where hot mineral-rich fluids interact with host rocks. It often occurs as prismatic crystals or fibrous aggregates in association with other sulfide minerals, such as galena and sphalerite. Unique Features: Boulangerite crystals can exhibit a prismatic habit, and the mineral often forms fine, fibrous aggregates. The metallic luster and dark color contribute to its distinctive appearance. Boulangerite is a member of the cylindrite group, which includes minerals with a similar crystal structure. Uses: Boulangerite is not widely used for commercial purposes due to its low hardness and association with sulfide ores. However, it is of interest to mineral collectors and researchers studying ore deposits and mineralogy. Caution: Boulangerite contains lead and antimony, both of which can be toxic. As with other lead-containing minerals, care should be taken when handling specimens, and contact with the mouth or ingestion of dust particles should be avoided. Proper hygiene practices, such as washing hands after handling, are recommended.

Basic Info

Condition New
Color Black
Certification Imperial Time UK Ltd
Year 2024
Width 25mm
Vintage No
Stone Colour Grade D
Style Loose Gemstones
Shape Other polygon
Secondary Stone No Stone
Occasion Birthday
Main Stone Treatment Not Enhanced
Main Stone Creation Natural
Main Stone No Stone
Gemstone Form Rough
Main Stone Colour Black
Seller Waranty 12-month
Number of Gemstones 1
Number of Diamonds 0
Material Gemstone
Manufacturer Imperial Time
Height 70mm
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Care Instructions: Regularly clean your jewellery to remove dirt, oils, and other residues that can dull its appearance. Use a soft, lint-free cloth to gently wipe the surface of the jewellery.

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