Mineralpedia Details for Liroconite
Liroconite
Named after the Greek words lieros and conis, meaning, respectfully, “pale” and “powder,” in reference to the minerals pale blue streak. Liroconite is a secondary mineral that can be found in some oxidized copper deposits. It occurs in England, Germany, Slovakia, Russia, and the United States, among just a couple others.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/liroconite.pdf
- Formula
- Cu2AlAsO4(OH)4·4H2O
- Crystal System
- Monoclinic
- Crystal Habit
- Euhedral Crystals, Granular
- Cleavage
- Indistinct, Indistinct, None
- Luster
- Vitreous - Resinous
- Color
- light blue, green, sky blue, verdigris green
- Streak
- light blue
- Class
- Monoclinic - Prismatic
- Fracture
- Sub Conchoidal
- Hardness
- 2-2.5
- WebMineral
- View Liroconite
- Mindat
- View Liroconite
Liroconite from St. Day dist., Cornwall, England
Flattened Liroconite crystals to 1mm totally covered by Cornwallite or perhaps Cornubite. The darker blue is most probably Clinoclase or possibly Connellite. Very interesting study specimen.
Liroconite from Wheal Gorland, St. Day dist., Cornwall, England
Liroconite blue micro 0.75 to 1mm crystals from the type locality.
Bluish green crystals to 3mm.
Liroconite from Wheal Unity, St Day United mines, St Day dist., Cornwall, England
This is a micromount in the box. The specimen is 1cm across and has very nice deep blue crystals to 1mm.
