Mineral atlas / Species record
Quartz
- Chemical formula (IMA record)
- SiO₂
- Recognition status
- Approved
- Nomenclature / special-procedure record
- 1967 s.p.
- First-discovery country (IMA)
- unknown
- Crystal system
- Trigonal
- Mohs hardness
- 7
- Measured density
- 2.65 g/cm³
- Historical discoverer
- Not supplied in the IMA master list
How it occurs in nature
Quartz occurs in many igneous, metamorphic and sedimentary environments. It can crystallize from a melt or from silica-bearing fluids, and its durability allows grains to persist through weathering and sediment transport.
Related gem names
Discovery & scientific record
The country refers to the master list’s first-discovery country, using modern borders. It is not a list of all deposits. A question mark is retained when the source is uncertain; a special-procedure date can refer to redefinition rather than discovery.
Original reference: original paper?
Additional reference: European Journal of Mineralogy 2 (1990), 63
IMA-CNMNC master list · page 180 ↗
Handbook of Mineralogy · physical properties and occurrence ↗
RRUFF · further mineral research ↗ · Handbook of Mineralogy ↗
Catalog coverage and profile depth are different: every species in the cited IMA edition is indexed, but this edition does not provide every physical property or a full discovery narrative. The archive leaves those gaps explicit. Formulae and references are adapted from the IMA list under CC BY-SA 3.0; consult the original page for authoritative typography.