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| HAMBERGITE NATURAL COLOR Hardness 7.5 |
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The HAMBERGITE crystal is externally undamaged. Enlarge |
6.64 cts. Hambergite rough single
22.9 x 8.5 mm. nice shape (whole) Enhancement: none (N) |
stone PRICE
USD 620.00 ON HOLD ORIGIN: Madagascar ref:HAr664 |
 Enlarge |
16.84 cts. Hambergite crystal single
39.5 x 9.3 x 5.6 mm. nice shape (whole) Transparent, gem quality. Enhancement: none (N) Untreated |
stone PRICE
USD 1435.00 ORIGIN: Madagascar ref:HAr1684 |
 Enlarge |
30.17 cts. Hambergite rough single
31 x 15 mm. nice shape (whole) Enhancement: none (N) The HAMBERGITE crystal is externally undamaged. Enhancement: none (N) |
stone PRICE
USD 2564.00 ORIGIN: Madagascar ref:HAr3017 |
T
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2.87 cts. Hambergite rough single
16.8x 9.6 mm. nice shape (whole) Enhancement: none (N) |
stone PRICE
USD 199.00 ORIGIN: Madagascar ref:HAr287 |
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2.13 cts. Hambergite rough single
15.4x7.4 mm. nice shape (whole) Enhancement: none (N) |
stone PRICE
USD 110.00 ORIGIN: Madagascar ref:HAr213 |
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1.59 cts. Hambergite rough single
13.6x8.4 mm. nice shape (whole) Enhancement: none (N) The HAMBERGITE crystals is externally undamaged. |
stone PRICE
USD 90.00 ORIGIN: Madagascar ref:HAr159 |
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General Information |
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| Chemical Formula: | Be2BO3(OH) | |||
| Composition: | Molecular Weight = 93.84 gm | |||
| Berylium 19.21 % Be 53.31 % BeO | ||||
| Boron 11.52 % B 37.09 % B2O3 | ||||
| Hydrogen 1.07 % H 9.60 % H2O | ||||
| Oxygen 68.20 % O | ||||
| ______ ______ | ||||
| 100.00 % 100.00 % = TOTAL OxIDE | ||||
| Empirical Formula: | Be2(BO3)(OH) | |||
| Locality: | HEL, MADAGASCAR | |||
Hambergite Images |
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 Click on the picture to go to facet Hambergite. |
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| © Image by A. Darbellay | ||||
Crystallography |
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| Axial Ratios: | a:b:c =0.798:1:0.3622 | |||
| Cell Dimensions: | a = 9.76, b = 12.23, c = 4.43, Z = 8; V = 528.79 Den(Calc)= 2.36 | |||
| Crystal System: | Orthorombic-Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pbca | |||
| x Ray Diffraction: | By Intensity(I/Io): 3.82(1)3.13(0.9)4.53(0.8) | |||
Physical Properties |
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| Cleavage: | [010] Perfect, [100] Good | |||
| Color: | colorless, gray white, yellowish white, or white. | |||
| Density: | 2.372 | |||
| Diaphaniety: | Transparent to Translucent | |||
| Fracture: | Brittle - Generally displayed by glasses and most non-metallic minerals. | |||
| Hardness: | 7.5 - Garnet | |||
| Luminescence: | ----- | |||
| Luster: | Vitreous - Dull | |||
| Streak: | white | |||
Optical Properties |
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| Optical Data: | Biaxial (+), a=1.55, b=1.59, g=1.63, bire=0.0800 | |||
| Pleochroism (x): | colorless. | |||
| Pleochroism (y): | colorless. | |||
| Pleochroism (z): | colorless. | |||
Classification |
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| Dana Class: | Anhydrous Borates Containing Hydroxyl or Halogen | |||
| Dana Type | ||||
| Dana Group | ||||
| Strunz Class: | Nitrates, Carbonates and Borates | |||
| Shelly borates with [BO2]1- to [B6O10]2- | ||||
| STRUNZ V/L.02-10 - Nitrates, Carbonates and Borates [Shelly borates with [BO2]1- to [B6O10]2- {Hambergite - Rhodizite series}] | ||||
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