Brookite
Brookite
Item-No.: MINS4674 Price: 145.00 EUR
Magnet Cove, Hot Spring Co., Arkansas, USA
Brookite
Item-No.: MINS4675 Price: 130.00 EUR
Magnet Cove, Hot Spring Co., Arkansas, USA
Brookite
Item-No.: MINS4676 Price: 145.00 EUR
Magnet Cove, Hot Spring Co., Arkansas, USA
| Synonyms: | Jurinite, Pyromelane |
| Classification: | Oxides |
| Chemical formula: | TiO2 |
| Crystal system: | Orthorhombic |
| Density (g/cm3): | 4.08 - 4.18 measured, 4.133 calculated |
| Tenacity: | Brittle |
| Cleavage: | Poor / indistinct on {120}, in traces on {001} |
| Fracture: | Irregular / uneven, sub-conchoidal |
| Hardness (Mohs): | 5.5 - 6 |
| Colour: | Brown, yellowish brown, reddish brown; dark brown to iron-black |
| Lustre: | Adamantine, sub-adamantine, vitreous, sub-vitreous, sub-metallic |
| Streak: | White to greyish white or yellowish white |
| Fluorescence: | Not fluorescent in ultraviolet |
| Transparency: | Transparent, translucent, opaque |
| Type locality: | Twll Maen Grisial, Fron Olau, Prenteg, Gwynedd, Wales, UK |