Johachidolite

Formula: CaAlB₃O₇
Mineral class: borates
Crystal system: orthorhombic
Mohs scale: 7.5
Density (g/cm³): 3.37 - 3.45
Refractive index: 1.712 - 1.726
Cleavage: restricted
Colors: colorless, yellow, orange, brown
Transparency: transparent - translucent
Luster: vitreous
Fluorescence: SW UV: blue
Pleochroism: -
Largest Johachidolite: ?
Deposits: Pyan Gyi Mine / Pyan Pyit / Mogok / Myanmar, Sangpal-tong / North Corea
Discovery: 1942
1st Description: 1951
Name: ref. to the first deposit in the Johachido (name from the Japanese colonial-era) district in North Corea

Johachidolite

Weight: 1.02 ct

Origin: Pyan Gyi Mine / Pyan Pyit / Mogok / Myanmar

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Johachidolite SW UV Light

Size: 0.21 x 0.17 cm
Weight: 0.02 ct
Origin: Mogok / Myanmar

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Johachidolite

Size: 0.64 x 0.61 x 0.38 cm
Weight: 0.94 ct
Origin: Myanmar

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Johachidolite Mineral

Size: 3.4 x 2.5 x 4.1 cm

Origin: Pyan Pyit / Mogok / Myanmar

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Johachidolite

Weight: 0.08 ct

Origin: Pyan Pyit / Mogok / Myanmar

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Johachidolite Mineral in violet Hackmanite

Origin: Pyan Gyi Mine / Pyan Pyit / Mogok / Myanmar

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Johachidolite

Weight: 1.15 ct

Origin: Mogok / Myanmar

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Johachidolite Mineral

Size: 3.5 x 3.0 x 1.6 cm

Origin: Pyan Pyit / Mogok / Myanmar

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Johachidolite

Weight: 0.2 ct

Origin: Pyan Gyi Mine / Pyan Pyit / Mogok / Myanmar

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Johachidolite bicolor

Weight: 0.52 ct

Origin: Mogok / Myanmar

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