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> Minerals
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Bornite
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| Bornite
 Bukov, Žďár nad Sázavou Co., Moravia, Czech Republic
Item-No.: MINS2435
Price: 12.00 EUR
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| Bornite
Huber quarry, Horní Slavkov, Czech Republic
Item-No.: MINS2380
Price: 28.00 EUR
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| Synonyms: |
Chalcomiklite, Erubescite, Lefverslag, Peacockore, Phillipsine, Poikilite, Purple Copper (Ore), Variegated Copper (Ore) |
| Classification: |
Sulfides |
| Chemical formula: |
Cu5FeS4
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| Crystal system: |
Orthorhombic |
| Density (g/cm3): |
5.06 - 5.09 measured, 5.09 calculated |
| Tenacity: |
Brittle |
| Cleavage: |
Poor/indistinct, in traces on {111} |
| Fracture: |
Irregular/uneven |
| Hardness (Mohs): |
3 |
| Colour: |
Copper-red to pinchbeck-brown, quickly tarnishing to an iridescent purplish surface |
| Lustre: |
Metallic |
| Streak: |
Grey-Black |
| Transparency: |
Opaque |
| Type locality: |
Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic |
| Application: |
A major ore of copper |
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