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Tarbuttite is a rare phosphate mineral with formula Zn2(PO4)(OH). It was discovered in 1907 in what is now Zambia and named for Percy Coventry Tarbutt.
History, Occurrence & Structure
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| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Tarbuttite | 2V angle | 50° (measured) | 1.00 | infobox |
| Tarbuttite | Birefringence | δ = 0.053 | 1.00 | infobox |
| Tarbuttite | Category | Phosphate minerals | 1.00 | infobox |
| Tarbuttite | Cleavage | Perfect on {010} | 1.00 | infobox |
| Tarbuttite | Color | White, colorless, yellow, red, green, or brown | 1.00 | infobox |
| Tarbuttite | Crystal class | Pinacoidal (1) (same H-M symbol) | 1.00 | infobox |
| Tarbuttite | Crystal habit | Equant to short prismatic , sheaf-like aggregates, crusts, individual crystals rounded and deeply striated | 1.00 | infobox |
| Tarbuttite | Crystal system | Triclinic | 1.00 | infobox |
| Tarbuttite | Dana classification | 41.6.7.1 | 1.00 | infobox |
| Tarbuttite | Density | 4.12 g/cm3 (measured) | 1.00 | infobox |
| Tarbuttite | Diaphaneity | Transparent, translucent | 1.00 | infobox |
| Tarbuttite | Dispersion | Weak, strong | 1.00 | infobox |
| Tarbuttite | Formula | Zn2(PO4)(OH) | 1.00 | infobox |
| Tarbuttite | Fracture | Irregular, uneven | 1.00 | infobox |
| Tarbuttite | IMA symbol | Tbt | 1.00 | infobox |
| Tarbuttite | Luster | Vitreous, pearly on cleavages | 1.00 | infobox |
| Tarbuttite | Mohs scale hardness | 3.5 | 1.00 | infobox |
| Tarbuttite | Optical properties | Biaxial (−) | 1.00 | infobox |
| Tarbuttite | Refractive index | nα = 1.660 nβ = 1.705 nγ = 1.713 | 1.00 | infobox |
| Tarbuttite | Space group | P1 | 1.00 | infobox |
| Tarbuttite | Specific gravity | 4.12; 4.19 (calc.) | 1.00 | infobox |
| Tarbuttite | Streak | White | 1.00 | infobox |
| Tarbuttite | Strunz classification | 8.BB.35 | 1.00 | infobox |
| Tarbuttite | Ultraviolet fluorescence | Non-fluorescent | 1.00 | infobox |
| Tarbuttite | Unit cell | a = 5.400 Å, b = 5.654 Å c = 6.465 Å, α = 102.51° β = 102.46°, γ = 86.50° Z = 2 | 1.00 | infobox |
| Tarbuttite | is a | rare phosphate mineral with formula Zn2 | 0.90 | text |
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