quartz
Let an agent explain quartz and its varieties, relay structure, properties and occurrence from mineralogical references, describe uses from electronics to gems, and distinguish quartz from other silica minerals, from glass and from quartzite.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Understand What quartz is.
Definition
Definition and structure.
Definition
Definition.
- What is quartz, and how does it differ from opal, glass and quartzite? definition
- Is the question about quartz in general, a variety, a rock or a product? boundary
Varieties
Varieties.
Varieties
Varieties.
- What are rock crystal, amethyst, citrine, smoky, rose, cat s eye and star quartz, chalcedony and shocked quartz? definition
- Which entry fits the specific variety? action
Science Properties and occurrence.
Properties
Properties.
Properties
Properties.
- What are the physical properties of quartz, including piezoelectricity and polymorphs? provenance
- Which references are standard? provenance
Occurrence
Occurrence.
Occurrence
Occurrence.
- Where does quartz occur, in igneous, metamorphic and sedimentary rocks such as sandstones? provenance
- Which sources are cited? provenance
Use Uses.
Industry
Industry and electronics.
Industry
Industry.
- How is quartz used in glass, oscillators, optics and abrasives, and how is synthetic quartz grown? provenance
- Which entry fits crystal oscillator? action
Gems
Gems.
Gems
Gems.
- How are quartz gems cut, treated and valued? provenance
- Which entry fits gemstone? action
Context Safety and culture.
Safety
Safety.
Safety
Safety.
- What are the hazards of silica dust, and how are they controlled? provenance
- Which entry fits silicosis? action
Culture
Culture.
Culture
Culture.
- How has quartz featured in history, folklore and unproven healing claims, with claims attributed? provenance
- Is the presentation evidence-based? boundary
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.MAT
- Other names and narrower kinds
- cat's eye quartz, Burgpreppach sandstone, synthetic quartz, sinople, Shocked quartz, star quartz, hydrothermal quartz, prase, sceptre quartz, apricotine, chalcedony, rock crystal
What it is Filled
A hard, crystalline mineral of silicon dioxide, the second most abundant mineral in the continental crust, occurring as clear rock crystal and coloured varieties such as amethyst, citrine, smoky quartz, rose quartz, cat s eye and star quartz, as microcrystalline chalcedony and agate, as a constituent of sandstones such as the Burgpreppach sandstone, and as shocked quartz formed by meteorite impacts; synthetic quartz is grown for electronics, and quartz is used in glass, oscillators, abrasives and gemstones.
Why it exists Filled
Let an agent explain quartz and its varieties, relay structure, properties and occurrence from mineralogical references, describe uses from electronics to gems, and distinguish quartz from other silica minerals, from glass and from quartzite.
Distinguishing features Filled
- Hexagonal crystals
- Hardness 7
- Piezoelectric
- Many varieties
What robots and AI may and may not do Filled
Must not
- Misrepresent treated, synthetic or glass items as natural quartz gems.
- Advise cutting quartz or engineered stone without dust control.
- Encourage collecting specimens from protected sites.
- Present crystal healing claims as medical fact.
Only with a human decision
- Valuing gems for sale.
May
- Describe quartz, its varieties and uses from mineralogical sources.
- Identify specimens with stated confidence and methods.
- Warn generally about silica dust in cutting and grinding.
Moral aspects Filled
- Silicosis from quartz dust kills workers, including in stone benchtop trades.
- Undisclosed treatments defraud buyers.
Who is affected
- Stoneworkers and miners
- Gem buyers
- Collectors
Owners Filled
Steward
The person who holds a specimen; mineral rights belong to the landowner or state.
Master systems
- Mineral databases
Links to other meta-models Filled
parent
- Q12550001 - registry parent class
- Q1277475 - registry parent class
related
- tectosilicates - in registry terms
- dioxosilicate minerals (silica family) - in registry terms
- silicon dioxide - in crystalline form
- crystal oscillator - for timing
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.quartz
- Wikidata: Q43010 (https://www.wikidata.org/wiki/Q43010)
- IMA: quartz grandfathered species
- Strunz: 4.DA.05 quartz
Direct properties required Filled
- hardness: 7 Mohs
- density: 2.65 g/cm^3
- formula: SiO2 formula
- crustal abundance: about 12 percent - by volume
Recognition required Filled
- Crystalline silicon dioxide
- Rock crystal, amethyst, citrine, smoky, rose, cat s eye and star quartz, shocked quartz, synthetic quartz, quartz sandstones
- Opal is amorphous silica; glass is non-crystalline; quartzite is a metamorphic rock of quartz
- Hexagonal prismatic crystals, clear or coloured, with a glassy lustre and conchoidal fracture.
Capabilities and actions required Filled
- explain structure and varieties
- relay properties and occurrence
- describe uses
- distinguish related materials
Hazards and failure modes required Filled
- Silicosis from dust
- Confusing quartz with glass or other silica minerals
- Undisclosed treated or synthetic gems
Standards and interfaces required Filled
- Gem trade standards and disclosure of treatments
- Occupational silica dust limits
- Electronics component standards
Context of use required Filled
- Gems, electronics, glass and industry.
- macrocrystalline varieties such as rock crystal, amethyst, citrine, smoky and rose quartz
- chatoyant and asteriated varieties such as cat s eye and star quartz
- microcrystalline chalcedony, agate and jasper
- shocked quartz from impacts
- synthetic quartz for electronics
- quartz-rich rocks such as sandstones and quartzite
Sources Filled
- Wikidata item Q43010: quartz - identity and sense of the item
- Wikipedia: Quartz - general description of the item
Open questions
- Should amethyst and chalcedony be separate primary entries?
- How should mineralogical references be linked?
- The registry entry has merged aliases naming varieties and a local sandstone; should they be split off?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q43010/spec.json