A great little Specimen of Velvet Malachite with Cerussite. This piece looks way better in person than my photos, it’s a very aesthetic specimen and comes from a renowned Aussie location for these minerals. It is mounted on perspex to go straight into your cabinet.
Browns Deposit, Rum Jungle, Northern Territory, Australia.
4.2cm x 2.4cm x 1.5cm, 28g.
Copper Carbonate Hydroxide:
Malachite is a green, very common secondary copper mineral with a widely variable habit. Typically it is found as crystalline aggregates or crusts, often banded in appearance, like agates. It is also often found as botryoidal clusters of radiating crystals, and as mammillary aggregates as well. Named in antiquity by Pliny the Elder 79 CE as molochitus after the Greek ”mallows” in allusion to the green colour of the leaves. Known in the new spelling, malachites, at least by 1661. Malachite is a green and common secondary copper mineral with widely variable habit. Frequently found as a pseudomorph after Azurite crystals, which are generally more tabular in shape.
Cerussite is a popular collection mineral. It is famous for its great sparkle, great density and amazing twinned crystals. Cerussite is a minor ore of lead. It has a very high luster due mostly to the lead content. Just as leaded crystal glass sparkles more brilliantly because of its lead content, so too does Cerussite. The lead raises the index or refraction of Cerussite to just over 2.07. Lead is also responsible for its increased specific gravity. Cerussite has one of the highest densities for a transparent mineral. It is over six and a half times as dense as water. Most rocks and minerals average only around three times the density of water.