Paramelaconite
A variety of Minerals
What is Paramelaconite?
Paramelaconite is a rare, black-colored copper(I,II) oxide mineral with formula Cu2Cu2O3 (or Cu4O3). It was discovered in the Copper Queen Mine in Bisbee, Arizona, about 1890. It was described in 1892 and more fully in 1941. Its name is derived from the Greek word for "near" and the similar mineral melaconite, now known as tenorite.
Paramelaconite Market Value Calculator
Estimate the market value of Paramelaconite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Paramelaconite Localities Map
See where Paramelaconite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Composition of Paramelaconite
Paramelaconite crystallizes in the tetragonal crystal system. Its space group was correctly identified by Frondel as I41/amd. In 1978, O'Keeffe and Bovin determined the formula to be Cu4O3, specifically Cu2Cu2O3. There has been misunderstanding and misreporting of the mineral's crystal structure, due in part to a typographical error in O'Keeffe and Bovin's paper and the commonality of choosing an incorrect origin for the I41/amd space group. At the same time as O'Keeffe and Bovin's report, a paper by Datta and Jeffery determined a structure for the mineral based on the incorrect formula Cu12Cu4O14. The formula originated from incorrectly assuming that Frondel's analysis was of a homogeneous crystal of paramelaconite.
More Images
Quick Facts
Physical Properties
- Color
- Black, black with a slight purple tint
- Hardness (Mohs)
- 4.5
- Density
- 6.106 g/cm³
- Streak
- Brown-black
Chemical Properties
- Chemical Formula
- Cu1+2Cu2+2O3
- Elements
- Cu, O
Identify Paramelaconite Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you
%252FAbenakiite-(ce)-01.jpg&size=small)
