Rhodizite / Londonite
Rhodicit, Rhodicita, Rhodiziet, Rhodizit, Rhodizita, Родицит
Londoniet, Londonit, Londonita, Лондонит,
ﾛﾝﾄﾞﾝ石
Commonly known
rarer (so called collectors stones)
very rare (rarities)
relatively rare organic material
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Formula Rhodizite:
(K,Cs)Al4Be4(B,Be)12O28 K-dominant: Rhodizite
Mineral class: borates Crystal system: cubic Mohs scale: 8.5 Density (g/cm3): 3.44 Refractive index: 1.690 Cleavage: good - distinct Colors: colorless, white, grey, yellowish, greenish Luster: adamantine - vitreous Fluorescence: SW and LW UV: weak Pleochroism: - Largest Rhodizite: 3.5 cm? Deposits: UK (England), Madagascar, Russia, USA Discovery: ? 1st Description: 1965? Name: based on the Greek word "rhódon" (rose) because it colors a blowpipe flame red |
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Formula Londonite:
(Cs,K,Rb)Al4Be4(B,Be)12O28 Cs-dominant: Londonite
Mineral class: borates Crystal system: cubic Mohs scale: 8 Density (g/cm3): 3.34 Cleavage: ? Colors: colorless, white, yellowish, greenish Luster: vitreous Fluorescence: SW UV: yellow-green Pleochroism: - Largest Londonite: 7 cm? Deposits: Madagascar Discovery: 1999? 1st Description: 2001 |
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Rhodizite / Londonite
Size: 6.2 x 4.6 x 4.3 cm Origin: Antandrokomby Pegmatite / Manandona Valley / Antananarivo Prov. / Madagascar Photo by kind permission of © www.irocks.com |
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Rhodizite / Londonite
Size: 0.74 x 0.44 cm Weight: 0.83 ct Origin: Antsirabe / Vakinankaratra Region / Antananarivo Prov. / Madagascar Photo by kind permission of © www.americanthai.com |
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Rhodizite / Londonite Mineral
Origin: Tetezantsio / Vakinankaratra Reg. / Antananarivo Prov. / Madagascar Photo by kind permission of © www.irocks.com |
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Londonite
Size: 0.3 x 0.3 x 0.2 cm Weight: 0.10 ct Origin: Antsongombato Mine / Andrembesoa / Betafo Distr. / Antananarivo Prov. / Madagascar Photo by kind permission of © www.lucianabarbosa.com |
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Rhodizite / Londonite Mineral
Size: 4.4 x 3.2 x 1.5 cm Origin: Antandrokomby Pegmatite / Manandona Valley / Antananarivo Prov. / Madagascar Photo by kind permission of © www.irocks.com |
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Rhodizite / Londonite
Size: 0.40 x 0.35 cm Weight: 0.15 ct Origin: Antananarivo Prov. / Madagascar Photo by kind permission of © www.kox-gems.com |
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Rhodizite / Londonite Mineral
Size: 5 x 4 x 3.5 cm Origin: Antsongombato Mine / Andrembesoa / Betafo Distr. / Antananarivo Prov. / Madagascar Photo by kind permission of © www.italianminerals.com |
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Rhodizite / Londonite
Size: 0.57 x 0.5 cm Weight: 0.70 ct Origin: Antsongombato Mine / Andrembesoa / Betafo Distr. / Antananarivo Prov. / Madagascar Photo by kind permission of © www.ke4gems.com |
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Rhodizite / Londonite
Weight: 1.75 ct Origin: Madagascar Photo by kind permission of © www.djraregems.com |
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Rhodizite / Londonite Mineral bicolor
Size: 2.6 x 2.5 cm Origin: Antsongombato Mine / Andrembesoa / Betafo Distr. / Antananarivo Prov. / Madagascar Photo by kind permission of © www.fabreminerals.com |
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