Natromarkeyite

natromarkeyite

pseudomarkeyite

markeyite

bitumen

Images

Formula: Na₂Ca₈(UO₂)₄(CO₃)₁₃(H₂O)sub24.3H₂O
Hydrated carbonate, markeyite group, uranyl mineral
Crystal System: Orthorhombic
Specific gravity: 2.70 measured
Hardness: 1½ to 2
Streak: White
Colour: Pale yellow–green
Luminescence: Bright bluish white fluorescence with a 405 nm laser
RADIOACTIVE
Environments

Sedimentary environments
Hydrothermal environments

Natromarkeyite is a relatively new mineral, approved in 2019 and to date (June 2023) reported only from the type locality.

Localities

At the type locality, the Markey Mine, Red Canyon Mining District, San Juan County, Utah, USA, natromarkeyite and pseudomarkeyite were found as secondary phases on bitumen (asphaltum). Natromarkeyite occurred as pale yellow-green untwinned blades and tablets to 0.2 mm (MM 84.5.753-765).

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