Formula: Na₈Al₆Si₆O₂₄(Cl₂,S) (Sodalite variety)
Mineral class: silicates
Crystal system: cubic
Mohs scale: 5 - 6
Density (g/cm³): 2.27 - 2.33
Colors: colorless, rose, violet
Luster: vitreous
Fluorescence: LW: orange; SW: rose-violet
Pleochroism: -
Largest Hackmanite: 8 cm?
Deposits: Afghanistan, Greenland, Canada

Hackmanite

Origin: Afghanistan

Photo by kind permission of © www.irocks.com, Dr. Robert Lavinsky.

Hackmanite

Weight: 7.87 ct

Origin: Afghanistan

Photo by kind permission of © www.americanthai.com, Scott Davies.

Hackmanite

Weight: 2.06 ct

Origin: Afghanistan

Photo by kind permission of © www.americanthai.com, Scott Davies.

Hackmanite

Weight: 0.48 ct
Origin: Afghanistan

Photo by kind permission of © www.americanthai.com, Scott Davies.

Hackmanite Mineral

Origin: Kiran / Kokcha Valley / Badadkhshan / Afghanistan

Photo by kind permission of © www.irocks.com, Dr. Robert Lavinsky.

Hackmanite

Weight: 0.84 ct

Origin: Pein Gyi Mine / Pein Pyit / Mogok / Myanmar

Photo by kind permission of © www.crystal-treasure.com, Sieghard Ellenberger.

Hackmanite Mineral

Origin: Kokcha Valley / Badadkhshan / Afghanistan

Photo by kind permission of © www.kqminerals.com, Keith Hayes.

Hackmanite

Weight: 6.22 ct
Origin: Pein Gyi Mine / Pein Pyit / Mogok / Myanmar

Photo by kind permission of © www.crystal-treasure.com, Sieghard Ellenberger.

Hackmanite

Left: Daylight, right: Blacklight Blue Lamp
Weight: 1.76 ct
Origin: Myanmar

Photo by kind permission of © www.multicolour.com, David Weinberg.