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> Minerals
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Brookite
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| Brookite
 Magnet Cove, Hot Spring Co., Arkansas, USA
Item-No.: MINS4674
Price: 145.00 EUR
|
| Brookite
Magnet Cove, Hot Spring Co., Arkansas, USA
Item-No.: MINS4675
Price: 130.00 EUR
|
| Brookite
Magnet Cove, Hot Spring Co., Arkansas, USA
Item-No.: MINS4676
Price: 145.00 EUR
|
| 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 |
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