Afghanite

Formula: (Na,Ca,K)₈(Si,Al)₁₂O₂₄(SO₄,Cl,CO₃)₃·H₂O
Mineral class: silicates
Crystal system: hexagonal
Mohs scale: 5.5 - 6
Density (g/cm³): 2.55 - 2.65
Refractive index: 1.523 - 1.529
Cleavage: perfect
Colors: blue
Transparency: transparent
Luster: vitreous
Fluorescence: -
Pleochroism: -
Largest Afghanite: ?
Deposits: Afghanistan, Germany, Italy, Canada, Russia, Tajikistan, USA
1st Description: 1968
Name: after the country of origin: Afghanistan

Afghanite Mineral

Size: 0.52 x 0.38 x 0.28 cm

Origin: Afghanistan

Photo by kind permission of © Darlene Cobler

Afghanite

Weight: 0.04 ct
Size: 0.35 cm
Origin: Afghanistan

Photo by kind permission of © www.kox-gems.com

Afghanite

Weight: 0.06 ct
Size: 0.3 x 0.28 cm
Origin: Afghanistan

Photo by kind permission of © www.gemfrance.com

Afghanite Mineral

Size: 3.2 x 1.9 x 1.5 cm; Crystal: 1.4 cm

Origin: Rabot / Kokcha Valley / Badakshan Prov. / Afghanistan

Photo by kind permission of © www.irocks.com

Afghanite

Origin: Afghanistan

Photo by kind permission of © www.gemfrance.com

Afghanite

Weight: 3.24 ct

Origin: Afghanistan

Photo by kind permission of © www.irocks.com

Afghanite Mineral

Origin: Badakshan Prov. / Afghanistan

Photo by kind permission of © www.minedirect.com