Formula Rhodizit: (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

Rhodizite

Weight: 0.1 ct

Origin: Madagascar

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Rhodizite

Size: 0.62 x 0.54 cm
Weight: 0.81 ct
Origin: Madagascar

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Rhodizite Mineral

Size: 2.6 x 2.5 cm

Origin: Antsogombato / Antsirabe / Madagascar

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Rhodizite Mineral

Origin: Tetezantsio / Vakinankaratra / Antananarivo / Madagascar

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Rhodizite

Size: 0.55 x 0.34 cm
Weight: 0.28 ct
Origin: Madagascar

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Rhodizite

Weight: 1.75 ct

Origin: Madagascar

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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

Londonite Mineral

Size: 6.2 x 4.3 x 3.0 cm

Origin: Antsongombato Mine / Antsentsindrano / Andrembesoa / Betafo / Antananarivo / Madagascar

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Londonite

Size: 0.57 x 0.5 cm
Weight: 0.70 ct
Origin: Antsongombato Mine / Antsentsindrano / Andrembesoa / Betafo / Antananarivo / Madagascar

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Londonite Mineral

Size: 2.6 x 1.7 x 1.1 cm

Origin: Antsongombato Mine / Antsentsindrano / Andrembesoa / Betafo / Antananarivo / Madagascar

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Londonite Mineral on Rubellite

Size: 5.0 x 4.7 x 3.0 cm

Origin: Tetezantsio / Antsirabe Reg. / Madagascar

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Londonite

Size: 0.40 x 0.35 cm
Weight: 0.15 ct
Origin: Antananarivo / Madagascar

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