Bustamite

Formula: (Mn,Ca)₃Si₃O₉
Mineral class: silicates
Crystal system: triclinic
Mohs scale: 5.5 - 6
Density (g/cm³): 3.32 - 3.38
Refractive index: 1.662 - 1.707
Cleavage: different
Colors: orange, rose, brown-red
Luster: vitreous
Fluorescence: LW: red
Pleochroism: -
Largest Bustamite: 2.5 cm?
Deposits: worldwide
1st Description: 1922
Name: in honor of the Mexican general Anastasio Bustamente (1780-1853)

Bustamite Mineral

Origin: Broken Hill / New South Wales / Australia

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Bustamite Mineral

Size: 4.08 x 2.05 x 1.72 cm

Origin: South Africa

Photo by kind permission of © Darlene Cobler

Bustamite

Weight: 1.0 ct

Origin: Broken Hill / New South Wales / Australia

Photo by kind permission of © rocklogic.biz

Bustamite

Size: 1.5 x 1.3 x 0.9 cm
Weight: 16.40 ct
Origin: Wessels Mine / Kalahari Manganese Fields / South Africa

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Bustamite Mineral

Size: 4.6 x 3.7 x 2.8 cm

Origin: Wessels Mine / / Hotazel / Northern Cape Province / South Africa

Photo by kind permission of © www.trinityminerals.com

Bustamite

Weight: 2.63 ct

Origin: South Africa

Photo by kind permission of © www.steveperrygems.com

Bustamite Mineral

Size: 9.4 x 5.3 x 4.5 cm

Origin: Wessels Mine / / Hotazel / Northern Cape Province / South Africa

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Bustamite

Weight: 1.76 ct
Diameter: 0.7 cm
Origin: South Africa

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Bustamite

Weight: 2.35 ct

Origin: South Africa

Photo by kind permission of © rocklogic.biz

Bustamite

Weight: 1.56 ct

Origin: N'Chwaning II Mine / Hotazel / Northern Cape Province / South Africa

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Bustamite

Size: 0.4 x 0.4 x 0.3 cm
Weight: 0.33 ct
Origin: Hotazel / Northern Cape Province / South Africa

Photo by kind permission of © www.lucianabarbosa.com