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Quartz and Pyrite
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| [Note Guidelines] Photographer's Note |
[Note en francais et autre POV]
Stone from Romania and composed of hematite, pyrite and quartz.
- Named in antiquity from the Greek "pyros" for "fire" because sparks flew from it when hit with another mineral or a metal. Pyrite is a very common mineral, found in a wide variety of geological formations from sedimentary deposits to hydrothermal veins and as a constituent of metamorphic rocks. The brassy-yellow metallic colour of Pyrite has in many cases lead to people mistaking it for Gold, hence the common nickname 'Fools Gold'. Pyrite is quite easy to distinguish from Gold, it is much lighter, but harder and cannot be scratched with a fingernail or pocket knife.
- Quartz come from the German "quarz", of uncertain origin. Quartz is the most common mineral found on the surface of the earth. A significant component of many igneous, metamorphic and sedimentary rocks, this natural form of silicon dioxide is found in an impressive range of varieties and colours. There are many names for different varieties: Crypto-crystalline varieties of Quartz are listed seperately under Chalcedony, and include the Agate family. |
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Updated |
| To Lapii: Black stone | jloup |
1 |
03-29 14:53 |
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- Lapii (68)
- [2006-03-29 14:36]
- [+]
Very nice picture and very good depth of field.
Is the hematite the black stone under the pyrite and the quartz?
Thanks for sharing
Lapi
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