2.8" Quartz on Malachite - Peru

This beautiful specimen consists malachite spheres that are encrusted in a layer of quartz crystals. It was collected from the Lily Mine in Pisco Umay, Peru and is 2.8" wide.

Silicon Dioxide, also know as SiO2 or Quartz, is the second most abundant mineral in the Earth's crust. Quartz crystals generally grow in silica-rich, hot watery solutions called hydrothermal environments, at temperatures between 100°C and 450°C, and usually under very high pressure. Quartz veins are formed when open fissures are filled with hot water during the closing stages of mountains forming, and can be hundreds of millions of years old.

Malachite is an intense green, copper based mineral that can be found in a wide variety of forms. Malachite can grow in botryoidal masses, stalactitic, and reniform formations, typically as a tight cluster of fanning fibrous needles that make up a seemingly solid mass. As layers continue to stack during formation, a banded pattern can sometimes begin to take shape, which explains the rings in all shades of green that are seen on most polished malachite specimens.

Malachite results from the weathering of other copper ores and is very often found associated with other copper-based minerals such as Azurite and Chrysocolla. It can be found in copper deposits around the world, but the Democratic Republic Of The Congo is the primary source for polished malachite and mineral specimens.

Malachite has been prized since ancient times, first as a utilitarian copper ore, and then as an ornamental stone. Due to it's value as a decorative stone, it's rarely mined as a copper ore anymore.
DETAILS
SPECIES
Quartz & Malachite
LOCATION
Lily Mine, Pisco Umay, Ica Department, Peru
SIZE
2.8" wide
CATEGORY
ITEM
#98125