Herderite / Hydroxylherderite
Herderiet, Herderit, Herderita, Гердерит, ﾍﾙﾃﾞﾙ石, 磷鈹鈣石
Commonly known
rarer (so called collectors stones)
very rare (rarities)
relatively rare organic material
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Formula of Herderite: CaBe(PO4)F
Formula of Hydroxylherderite: CaBe(PO4)OH Mineral class: phosphates Crystal system: monoclinic Mohs scale: 5 Density (g/cm3): 3.00 - 3.02 Refractive index: 1.587 - 1.627 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 Name: in honor of the German Oberberghauptmann (senior mountain captain) Baron Siegmund August Wolfgang Freyherr von Herder (1776 - 1838) |
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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 |
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Herderite
Weight: 5.66 ct Origin: Minas Gerais / Brazil Photo by kind permission of © www.thegemtrader.com |
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Herderite
Size: 0.92 x 0.74 x 0.48 cm Weight: 2.15 ct Origin: Brazil Photo by kind permission of © www.gemfrance.com |
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Hydroxylherderite Mineral with Schorl / SW UV
Size: 2.3 x 2.0 x 1.3 cm Origin: Alto Ligonha / Zambezia Prov. / Mozambique Photo by kind permission of © www.lucianabarbosa.com |
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Hydroxylherderite Mineral
Origin: Dassu / Shigar Valley / Gilgit-Baltistan / Pakistan Photo by kind permission of © www.irocks.com |
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Hydroxylherderite
Weight: 18.45 ct Size: 2.4 x 1.3 x 0.9 cm Origin: Ouro Verde de Minas / Minas Gerais / Brazil Photo by kind permission of © www.lucianabarbosa.com |
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Hydroxylherderite
Weight: 5.51 ct Origin: Ouro Verde de Minas / Minas Gerais / Brazil Photo by kind permission of © www.djraregems.com |
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Hydroxylherderite Mineral
Origin: Chhappu / Braldu Valley / Skardu Distr. / Gilgit-Baltistan / Pakistan Photo by kind permission of © www.irocks.com |
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Hydroxylherderite Mineral
Origin: Xanda Mine / Virgem da Lapa / Minas Gerais / Brazil Photo by kind permission of © www.irocks.com |
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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 |
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Hydroxylherderite Mineral
Origin: Salgodinho / Paraíba / Brazil Photo by kind permission of © www.mineralman.com |
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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 |
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