| Quartz | |
|---|---|
| |
| Chemical name | Silicon dioxide |
| Chemical formula | SiO2 |
| Identification | |
| Colors | Clear (with no impurities) |
| Crystal habit | 6-sided prism ending in 6-sided pyramid |
| Crystal system | rhombohedral |
| Cleavage | None |
| Fracture | Conchoidal |
| Hardness | 7 |
| Name origin | German "Quarz". |
| Specific gravity | 2.65 |
| Streak | White |
The following are guidelines for creating and editing articles pertaining to minerals.
InfoboxEdit
The mineral template infobox (example right) is to be used for all articles.
DescriptionEdit
A brief description of the mineral. If the mineral is a birthstone or gemstone, this information should be mentioned.
VarietiesEdit
Names and brief descriptions of varieties based on significant differences in chemical composition or properties.
HistoryEdit
Discuss the history of this mineral. Some of them have ancient history and some are modern. This history can include more details on how its name originated.
Physical PropertiesEdit
Details of the physical properties such as hardness, cleavage, fracture, crystal structure, specific gravity, radioactivity, etc.
Optical PropertiesEdit
Details of the optical properties such as color, transparency, streak, luster, fluorescence, etc.
Distinctive FeaturesEdit
Prominent features likely to lead to identification.
TestsEdit
Flame and chemical tests.
FormationEdit
Describe how the mineral forms; such as mineral veins and its association with different rocks.
UsesEdit
List any uses such as industrial, ornamental, etc.
OccurrencesEdit
List the occurrences of this mineral throughout the world. Start with the type locality.
External LinksEdit
Add external links to this mineral from the following sources:
GalleryEdit
If there are multiple images of this mineral, display them at the bottom of the article using the <gallery> tag.
Amethyst crystals
Amethyst crystals
Large amethyst geode on display at the American Geological Institute
Amethyst sample
