Obsidian

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Obsidian topic overview

The analysis highlights History, Applications and Regions as prominent areas in the source structure around Obsidian.

Related topics: 169
Source areas: 5
Connected nodes: 174
Extracted relationships: 203
Concept neighborhoods: 27
Bridge connections: 174

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.

Prehistoric and historical use · 61 topics

Occurrence · 41 topics

Origin and properties · 31 topics

Overview · 22 topics

Current use · 14 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: Volcanic glass
Color: usually black; sometimes green or brown; rarely yellow, orange, red or blue
Fracture: Conchoidal
Luster: Vitreous
Melting point: 700–1,050 °C (1,292–1,922 °F)[citation needed]
Mohs scale hardness: 5–6

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

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 Obsidian connects Entity context

The extracted context around Obsidian shows recurring relationship patterns in the source. For example, Obsidian → Argentina, Arizona, Armenia, Australia, Azerbaijan, Big Obsidian Flow, California, Canada, Canary Islands, Cascade Range, Chile, Colorado, Ecuador, El Salvador, Georgia, Greece, Guatemala, Hungary, Iceland, Idaho Another extracted example is Obsidian → Americas, Aztec Empire, California, Casa Diablo Hot Springs, Central Mexico, Chumash, Classic Period, Each, For, Green Pachuca, Hispanic, Hopewell, Hopewell Culture National Historical, Indigenous, Lithic, Maya, Mesoamerica, Mexica, Mission Santa Clara, Ohio. Use these groups to spot repeated connection types before inspecting the individual relationships.

Top relations

related to Occurrence · 53

Obsidian → Argentina, Arizona, Armenia, Australia, Azerbaijan, Big Obsidian Flow, California, Canada, Canary Islands, Cascade Range, Chile, Colorado, Ecuador, El Salvador, Georgia, Greece, Guatemala, Hungary, Iceland, Idaho

related to Americas · 31

Obsidian → Americas, Aztec Empire, California, Casa Diablo Hot Springs, Central Mexico, Chumash, Classic Period, Each, For, Green Pachuca, Hispanic, Hopewell, Hopewell Culture National Historical, Indigenous, Lithic, Maya, Mesoamerica, Mexica, Mission Santa Clara, Ohio

related to Europe · 25

Obsidian → Aegean Sea, Artifacts, Cardium-Impresso, Central Europe, Criș, Europe, European, Greece, Gyali, Hernando Cortés's, Hungary, John Dee, Körös, Mediterranean, Mexico, Middle Paleolithic, Milos, Neolithic, Nisyros, Slovakia

related to Prehistoric and historical use · 21

Obsidian → Acheulian, Anatolian, BC, BP, Croatia, Iraqi Kurdistan, It, Kariandusi, Kenya, Levant, Like, Lipari, Manufacture, Mesopotamian, Modern, Neolithic, Po, Sicily, Stone Age, Tell Brak

see also · 16

Obsidian → Ancient, Ancient Maya, Artificial, Desert, EgyptMayor Island, Form, Glassy, Helenite, Libya, Lintel, Maya, Mexico, Māori, New Zealand, Tūhua, Volcanic

related to Middle East and Asia · 11

Obsidian → Ancient Egyptians, BC, Bronze Age, In, Japan, Jōmon, Mediterranean, Red Sea, The, Turkey, Ubaid

related to Current use · 8

Obsidian → All, Don Crabtree, Drug Administration, FDA, One, The, US Food, Well-crafted

related to Oceania · 8

Obsidian → BC, Easter Island, Moai, Pacific Ocean, Rapa Nui, Rongorongo, The, The Lapita

related to Origin and properties · 8

Obsidian → Elder, Ethiopia, Extrusive, Intrusive, Obsidius, Pliny, Roman, The Natural History

Category · 1

Obsidian → Volcanic glass

Important terminology

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

Important terminology

found lava glass used tools blades use volcanic made volcano artifacts also felsic may age mexico sources bc surgical high

Obsidian relationships Subject–Predicate–Object triples

TTTA extracted 203 structured relationships around Obsidian. Examples in this analysis include Obsidian → Category → Volcanic glass and Obsidian → Color → usually black; sometimes green or brown; rarely yellow, orange, red or blue. The table shows each extracted connection, where it came from and its confidence.

Subject	Predicate	Object	Confidence	Src
Obsidian	Category	Volcanic glass	1.00	infobox
Obsidian	Color	usually black; sometimes green or brown; rarely yellow, orange, red or blue	1.00	infobox
Obsidian	Fracture	Conchoidal	1.00	infobox
Obsidian	Luster	Vitreous	1.00	infobox
Obsidian	Melting point	700–1,050 °C (1,292–1,922 °F)[citation needed]	1.00	infobox
Obsidian	Mohs scale hardness	5–6	1.00	infobox
Obsidian	Optical properties	Translucent	1.00	infobox
Obsidian	Other characteristics	Texture: Smooth; glassy	1.00	infobox
Obsidian	Specific gravity	c. 2.4	1.00	infobox
silicon	instance of	obsidian is rich in the lighter elements	0.80	text
oxygen	instance of	obsidian is rich in the lighter elements	0.80	text
aluminium	instance of	obsidian is rich in the lighter elements	0.80	text

Related concept clusters Concept neighborhoods

The concept neighborhoods around Obsidian bring nearby vocabulary together. In this analysis, examples include Found, Blades and Made. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

Obsidian
- Found
- Blades
- Made
- Glass
- Use
- Used
- Tools
- Volcanic
- Lava
- Age
- Artifacts
- Bc
obsidian
- Found
- Blades
- Made
- Glass
- Use
- Used
- Tools
- Volcanic
- Lava
- Age
- Artifacts
- Bc
volcanic glass
- Volcano
- Volcanic
- Mineral
- Use
- Crystals
- Black
- Obsidian
- Lava
- Made
- Tools
- Blades
- Color
obsidian dome, california
- Found
- Flows
- Sites
- Tools
- Blades
- Made
- Glass
- Use
- Used
- Volcano
- Volcanic
- Lava
obsidian hydration dating
- Found
- Blades
- Made
- Glass
- Use
- Used
- Tools
- Volcanic
- Lava
- Age
- Artifacts
- Bc
use of obsidian
- Found
- Volcanic
- May
- Blades
- Made
- Glass
- Use
- Used
- Tools
- Lava
- Although
- Color
obsidian mirrors
- Found
- Blades
- Made
- Glass
- Use
- Used
- Tools
- Volcanic
- Lava
- Age
- Artifacts
- Bc
glass knife
- Volcanic
- Mineral
- Crystals
- Black
- Volcano
- Obsidian
- Lava
- Made
- Blades
- Color
- Europe
- Many

Connections between topic areas Semantic bridges

For Obsidian, one of the stronger structural bridges in this analysis connects Obsidian with Prehistoric and 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

Obsidian — Prehistoric and historical use · splits 113 ⟂ 62

Obsidian — Occurrence · splits 133 ⟂ 42

Obsidian — Origin and properties · splits 143 ⟂ 32

Obsidian — Overview · splits 152 ⟂ 23

Obsidian — Current use · splits 160 ⟂ 15

Map overview Semantic statistics

Obsidian

Nodes175

Edges174

Triples203

Avg. degree1.99

Density0.011429

Components1

Source & methodology

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

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