Siderite

Formula: Fe²⁺CO₃
Mineral class: carbonates
Crystal system: trigonal
Mohs scale: 3.75 - 4.25
Density (g/cm³): 3.96
Refractive index: 1.633 - 1.875
Cleavage: perfect
Colors: colorless, white, grey, yellow, red, brown, green, black
Transparency: transparent - translucent
Luster: vitreous
Fluorescence: -
Pleochroism: -
Largest crystal: 25 cm?
Deposits: worldwide
Discovery: 1565?
1st Description: 1565 (Gesner)
Name: from the Greek word "sideros" (iron)

Siderite Mineral

Size: 4.2 x 3.7 x 1.7 cm

Origin: Morro Velho Mine / Nova Lima / Minas Gerais / Brazil

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Siderite

Weight: 0.33 ct

Origin: Brazil

Photo by kind permission of © www.gemfrance.com

Siderite Mineral

Image width: 7.1 mm

Origin: Rapid Creek / Dawson Mining District / Yukon Territory / Canada

Photo by kind permission of © Domenico Preite

Siderite Mineral

Image width: 2 mm

Origin: Estes Quarry / Baldwin / Cumberland County / Maine / USA

Photo by kind permission of © Peter Cristofono

Siderite

Weight: 2.41 ct

Origin: Ibituruna Peak / Doce Valley / Minas Gerais / Brazil

Photo by kind permission of © www.thegemtrader.com

Siderite Mineral

Image width: 3 mm

Origin: Washington Pass / Okanogan County / Washington / USA

Photo by kind permission of © Saul Krotki

Siderite Mineral

Size: 6.2 x 4.1 x 3.6 cm

Origin: Neudorf / Harzgerode / Harz Mts. / Germany

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Siderite

Size: 0.3 x 0.2 cm
Weight: 0.11 ct
Origin: Brazil

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Siderite Mineral

Image width: 0.9 cm

Origin: Cornelia Mine / Hagendorf / Waidhaus / Oberpfälzer Wald Mts. / Bavaria / Germany

Photo by kind permission of © Stephan Wolfsried

Siderite

Size: 0.9 x 0.6 x 0.5 cm
Weight: 2.35 ct
Origin: Minas Gerais / Brazil

Photo by kind permission of © www.lucianabarbosa.com

Siderite Mineral

Size: 2.6 x 1.9 x 1.4 cm

Origin: Siete Suyos Mine / Atocha-Quechisla Distr. / Sud Chichas Prov. / Potosí Dep. / Bolivia

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Siderite

Weight: 2.19 ct

Origin: Portugal

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