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Danburite is a calcium boron silicate mineral with a chemical formula of CaB2(SiO4)2.
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crystal orthorhombic tectosilicate mineral form either pnam formula cab2 sio4 mohs hardness specific gravity colourless yellow dana classification minerals strunz
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Danburite | 2V angle | 88 to 90° measured | 1.00 | infobox |
| Danburite | Birefringence | δ = 0.006 | 1.00 | infobox |
| Danburite | Category | Tectosilicate minerals | 1.00 | infobox |
| Danburite | Cleavage | {001} Poor | 1.00 | infobox |
| Danburite | Colour | Colourless, white, gray, brownish white, straw yellow | 1.00 | infobox |
| Danburite | Crystal class | Rhombic dipyramidal (mmm) | 1.00 | infobox |
| Danburite | Crystal habit | Euhedral prismatic crystals; disseminated masses | 1.00 | infobox |
| Danburite | Crystal system | Orthorhombic | 1.00 | infobox |
| Danburite | Dana classification | 56.3.1.1 | 1.00 | infobox |
| Danburite | Diaphaneity | Transparent to translucent | 1.00 | infobox |
| Danburite | Dispersion | r < v strong | 1.00 | infobox |
| Danburite | Formula | CaB2(SiO4)2 | 1.00 | infobox |
| Danburite | Fracture | Subconchoidal to uneven | 1.00 | infobox |
| Danburite | IMA status | Grandfathered (1839) | 1.00 | infobox |
| Danburite | IMA symbol | Dbu | 1.00 | infobox |
| Danburite | Lustre | Vitreous to greasy | 1.00 | infobox |
| Danburite | Mohs scale hardness | 7 – 7.5 | 1.00 | infobox |
| Danburite | Optical properties | Biaxial (+/-) | 1.00 | infobox |
| Danburite | Refractive index | nα = 1.627 – 1.633 nβ = 1.630 – 1.636 nγ = 1.633 – 1.639 | 1.00 | infobox |
| Danburite | Space group | Pnam (no. 62) | 1.00 | infobox |
| Danburite | Specific gravity | 2.93 – 3.02 | 1.00 | infobox |
| Danburite | Streak | White | 1.00 | infobox |
| Danburite | Strunz classification | 9.FA.65 | 1.00 | infobox |
| Danburite | Tenacity | Brittle | 1.00 | infobox |
| Danburite | Ultraviolet fluorescence | Fluorescent and thermoluminescent (red); Short UV=violet blue; Long UV=blue to blue-green | 1.00 | infobox |
| Danburite | Unit cell | a = 8.038(3), b = 8.752(5) c = 7.73 [Å]; Z = 4 | 1.00 | infobox |
| Danburite | is a | calcium boron silicate mineral with a chemical formula of CaB2 | 0.90 | text |
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