75g Cleaved Galena Cluster Silver Color Natural Crystal Rough Collectible Mineral Gemstone Specimen - Morocco
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75g Cleaved Galena Cluster Silver Color Natural Crystal Rough Collectible Mineral Gemstone Specimen - Morocco
You will receive exactly this Galena Cluster - 34mm x 21mm x 20mm / 1 3/8 x 13/16 x 13/16 Inches; 75g / 2.6 oz (see photo, the photos are taken under bright light, stand not included)!
Galena is a lead sulfide mineral with a chemical composition of PbS. It is the world's primary ore of lead and is mined from a large number of deposits in many countries. It is found in igneous and metamorphic rocks in medium- to low-temperature hydrothermal veins. In sedimentary rocks it occurs as veins, breccia cements, isolated grains, and as replacements of limestone and dolostone.
Galena is very easy to identify. Freshly broken pieces exhibit perfect cleavage in three directions that intersect at 90 degrees. It has a distinct silver color and a bright metallic luster. Galena specimens may tarnish when exposed to air, becoming dull in luster. Freshly cleaved specimens exhibit a strong metallic luster, but over time the luster turns more dull, although still metallic. The tarnish can be removed by scrubbing the specimen with water and mild soap.
Galena specimens must be taken care of more so then other minerals. They are easily damaged, and well formed crystals may shatter into small crystal fragments if put under slight pressure or dropped, so care should be taken when handling and transporting Galena specimens. Formula: PbS; Colour: Lead-grey; Hardness: 2½;
(The above information is provided solely for informational purpose. Kindly note that all stones are offered for decorative purposes only. Please, handle your stones with great care, do not grind or crumble them, do not dip or add them into your food or drink, do not use any parts of them in any elixirs, potions, lotions etc. Always make sure you wash your hands before and after working with your crystals.)