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Formula: Cu(C2H3O3)2
Organic compound, glycolate subgroup
Crystal System: Monoclinic
Specific gravity: 2.12 measured, 2.138 calculated for lazaraskeite-M1 and 2.10 measured, 2.086 calculated for
lazaraskeite-M2
Hardness: 2
Streak: White
Colour: Greenish blue
Solubility: Insoluble in water or acetone
Environments
Lazaraskeite is a relatively new mineral, approved in 2019 and to date (April 2024) reported only from the
type locality.
Localities
At the type locality, Western end, Pusch Ridge, Pima County, Arizona, USA, lazaraskeite,
with two polytypes M1 and M2, occurs as euhedral individual crystals (up to 0.20 × 0.20 × 0.80 mm) or
aggregates, with the former being more equant crystals and the latter bladed crystals. Associated minerals include
chrysocolla, malachite,
wulfenite, mimetite,
hydroxylpyromorphite,
hematite, microcline,
muscovite and quartz
(AM 107.3.509-516.
Lazaraskeite is formed by the interaction of fluids containing glycolic acid
(C2H4O3) with copper produced by the oxidation
of primary and secondary minerals
(HOM)
Lazaraskeite from the Western End -
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