Formula of Herderite: CaBe(PO₄)F
Formula of Hydroxylherderite: CaBe(PO₄)OH
Mineral class: phosphates
Crystal system: monoclinic
Mohs scale: 5
Density /g/cm³: 3
Cleavage: fair - imperfect
Colors: white, yellowish, rose, green, blue
Luster: vitreous
Fluorescence: UV: violet, X-rays: pinkish orange
Pleochroism: -
Largest Herderite: ?
Deposits: Brazil, Czech Republic, Finland, Germany, Italy, Namibia, Pakistan, Russia, Spain, UK (England), USA
Discovery: 1828
1st Description: 1951

Herderite Mineral

Size: 2.3 x 2.0 x 1.5 cm

Origin: Waisanen Mine / Greenwood / Oxford County / Maine / USA

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

Herderite

Weight: 6.15 ct

Origin: Brazil

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

Herderite Mineral

Origin: Bulochi / Diamar District / Pakistan

Photo by kind permission of © www.minerals-online.de, Dr. Marcus Lueg.

Herderite

Weight: 2.74 ct

Origin: Brazil

Photo by kind permission of © www.gemfrance.com, Dr. Laurent Sikirdji.

Herderite Mineral

Origin: Dassu / Haramosh Mountains / Gilgit / Pakistan

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

Hydroxylherderite Mineral

Origin: Salgodinho / Paraiba / Brazil

Photo by kind permission of © www.mineralman.com, Jasun McAvoy.

Hydroxylherderite

Weight: 0.31 ct

Origin: Brazil

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

Hydroxylherderite Mineral

Origin: Xanda Mine / Virgem da Lapa / Minas Gerais / Brazil

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

Hydroxylherderite Mineral

Size: 5.7 x 3.1 x 3.0 cm

Origin: Barra das Salinas / Coronel Murta / Minas Gerais / Brazil

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

Hydroxylherderite

Weight: 0.28 ct

Origin: Brazil

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

Hydroxylherderite Mineral

Size: 2.38 x 1.9 x 1.46 cm

Origin: Xanda Mine / Virgem da Lapa / Minas Gerais / Brazil

Photo by kind permission of © www.mineralman.com, Jasun McAvoy.

Hydroxylherderite Mineral

Origin: Chhappu / Braldu Valley / Skardu District / Baltistan / Pakistan

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

Hydroxylherderite

Weight: 5.51 ct

Origin: Brazil

Photo by kind permission of © www.djraregems.com, John Rhoads.