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Onyx: History & Applications

Onyx is a typically black-and-white banded variety of agate, a silicate mineral. The bands can also be monochromatic with alternating light and dark bands. Sardonyx is a variety with red to brown bands alternated with black or white bands. The name "onyx" is also frequently used for level-banded (parallel-banded) agates, but in proper usage it refers to…

Language: English [EN]
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Onyx topic overview

The analysis highlights History and Applications as prominent areas in the source structure around Onyx.

Related topics
63
Source areas
6
Connected nodes
69
Extracted relationships
74
Concept neighborhoods
12
Bridge connections
69

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Historical use · 26 topics
Geographic occurrence · 15 topics
Imitations and treatments · 7 topics
Overview · 7 topics
Varieties · 7 topics
Etymology · 1 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Category
Tectosilicate minerals
Cleavage
None
Color
Black and white; red to brown with black or white (sardonyx)
Crystal system
Trigonal (quartz), Monoclinic (moganite)
Diaphaneity
Translucent
Formula
SiO2 (silicon dioxide)

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

Etymology

Varieties

Imitations and treatments

Geographic occurrence

Historical use

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How Onyx connects Entity context

The extracted context around Onyx shows recurring relationship patterns in the source. For example, Onyx → Argentina, Australia, Brazil, Canada, China, Czech Republic, Germany, Greece, India, Indonesia, Madagascar, Mexico, Pakistan, UK, Uruguay, US, Yemen Another extracted example is Onyx → Artificial, Elder, In, India, Mexico, Pliny, Roman, The, These, This, Treatments. Use these groups to spot repeated connection types before inspecting the individual relationships.

Onyx

Top relations

related to Geographic occurrence · 17
Onyx → Argentina, Australia, Brazil, Canada, China, Czech Republic, Germany, Greece, India, Indonesia, Madagascar, Mexico, Pakistan, UK, Uruguay, US, Yemen
has treatment · 11
Onyx → Artificial, Elder, In, India, Mexico, Pliny, Roman, The, These, This, Treatments
related to Culture · 8
Onyx → English, In Renaissance Europe, Mars, Persian, Romans, Sardonyx, The, This
related to Historical use · 7
Onyx → Egypt, It, Knossos, Minoan Crete, Second Dynasty, Some, Use
related to Varieties · 6
Onyx → Black, It, Its, Most, Sardonyx, Several
related to Etymology · 4
Onyx → Ancient Greek, Greek, Latin, The English
related to External links · 4
Onyx → Encyclopædia Britannica, Frederick William, Rudler, Vol
Category · 1
Onyx → Tectosilicate minerals
Cleavage · 1
Onyx → None
Color · 1
Onyx → Black and white; red to brown with black or white (sardonyx)

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

used also bands sardonyx black variety chalcedony treatments white color agates red banding ancient often colored parallel-banded use varieties calcite

Onyx relationships Subject–Predicate–Object triples

TTTA extracted 74 structured relationships around Onyx. Examples in this analysis include Onyx → Category → Tectosilicate minerals and Onyx → Cleavage → None. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
OnyxCategoryTectosilicate minerals1.00infobox
OnyxCleavageNone1.00infobox
OnyxColorBlack and white; red to brown with black or white (sardonyx)1.00infobox
OnyxCrystal systemTrigonal (quartz), Monoclinic (moganite)1.00infobox
OnyxDiaphaneityTranslucent1.00infobox
OnyxFormulaSiO2 (silicon dioxide)1.00infobox
OnyxFormula mass60.08 g/mol1.00infobox
OnyxFractureUneven, conchoidal1.00infobox
OnyxGroupQuartz group1.00infobox
OnyxIMA statusVariety of quartz (chalcedony)1.00infobox
OnyxLusterVitreous, silky1.00infobox
OnyxMohs scale hardness6.5–71.00infobox
OnyxOptical propertiesUniaxial/+1.00infobox
OnyxRefractive index1.530–1.5431.00infobox
OnyxSpecific gravity2.55–2.701.00infobox
OnyxStreakWhite1.00infobox
Onyxis atypically black-and-white banded variety of agate0.90text

Related concept clusters Concept neighborhoods

The concept neighborhoods around Onyx bring nearby vocabulary together. In this analysis, examples include Used, Also and Black. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Onyx
    • Used
    • Also
    • Black
    • Color
    • Chalcedony
    • Variety
    • Bands
    • Artificial
    • Green
    • Material
    • Produced
    • Ancient
  • onyx
    • Used
    • Also
    • Black
    • Color
    • Chalcedony
    • Variety
    • Bands
    • Artificial
    • Green
    • Material
    • Produced
    • Ancient
  • chalcedony
    • Colors
    • Minerals
    • Treatments
    • Variety
    • References
    • Mineral
    • Moganite
    • Quartz
    • Varieties
    • Onyx
    • Artificial
    • Make
  • ancient greeks
    • Color
    • Sardonyx
    • Treatments
    • References
    • Black
    • Brown
    • Moganite
    • Quartz
    • Varieties
    • Artificial
    • Banding
    • Minerals
  • shades of red
    • Brown
    • White
    • Black
    • Bands
    • References
    • Sardonyx
    • Variety
    • Moganite
    • Quartz
    • Varieties
    • Banding
    • Minerals
  • imitations and treatments
    • Colors
    • Ancient
    • Chalcedony
    • References
    • Used
    • Moganite
    • Quartz
    • Varieties
    • Artificial
    • Minerals
    • Sold
    • Techniques
  • quartz
    • Moganite
    • References
    • Varieties
    • Red
    • Use
    • Ancient
    • White
    • Chalcedony
    • Treatments
    • Variety
    • Sardonyx
  • moganite
    • Quartz
    • References
    • Varieties
    • Red
    • Use
    • Ancient
    • White
    • Treatments
    • Variety
    • Sardonyx
    • Onyx

Connections between topic areas Semantic bridges

For Onyx, one of the stronger structural bridges in this analysis connects Onyx with Historical use. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
Onyx — Historical use · splits 43 ⟂ 27
Onyx — Geographic occurrence · splits 54 ⟂ 16
Onyx — Overview · splits 62 ⟂ 8
Onyx — Varieties · splits 62 ⟂ 8
Onyx — Imitations and treatments · splits 62 ⟂ 8

Map overview Semantic statistics

Onyx

Nodes70
Edges69
Triples74
Avg. degree1.97
Density0.028571
Components1

Source & methodology

TTTA analyzes the structure around Onyx to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as History & Applications, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Onyx · EN edition · Analysis: TopicsToTalkAbout

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