QUARTZ CRYSTALS GALENA MATRIX
Fine terminated quartz crystals galena matrix specimen. Excellent terminations on the galena cubes and clear quartz make for a collectable piece. Bargain price.
3.5cm high x 8cm wide x 5.5cm deep, 142g.
PbS, Lead Sulfide.
Galena is a common and popular mineral for rock hounds. Its characteristic cubes, distinctive cleavage and high density make it easy to identify and a favorite in high school geology labs. The structure of Galena is identical to that of halite, NaCl. The two minerals have the same crystal shapes, symmetry and cleavage. Some Galena may contain up to 1% silver in place of lead. The large volume of Galena that is processed for lead produces enough Silver as a by product to make Galena the leading ore of Silver.