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Tephroite: Overview, Related Topics & Entities

Tephroite is the manganese endmember of the olivine group of nesosilicate minerals with the formula Mn2SiO4. A solid solution series exists between tephroite and its analogues, the group endmembers fayalite and forsterite. Divalent iron or magnesium may readily replace manganese in the olivine crystal structure.

Language: English [EN]
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Tephroite topic overview

The analysis highlights Overview, Related Topics and Entities as prominent areas in the source structure around Tephroite.

Related topics
28
Source areas
1
Connected nodes
29
Extracted relationships
24
Concept neighborhoods
21
Bridge connections
29

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.

Overview · 28 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.

2V angle
Measured: 60° to 70°, Calculated: 78°
Birefringence
δ = 0.101
Category
Silicate mineral
Cleavage
{010}, distinct; {001}, imperfect
Color
Olive-green, bluish green, gray, °esh-red, reddish brown; pale green in thin section, may be colorless
Crystal class
Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m)

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 Tephroite connects Entity context

The extracted context around Tephroite shows recurring relationship patterns in the source. For example, Tephroite → Measured: 60° to 70°, Calculated: 78° Another extracted example is Tephroite → δ = 0.101. Use these groups to spot repeated connection types before inspecting the individual relationships.

Tephroite

Top relations

2V angle · 1
Tephroite → Measured: 60° to 70°, Calculated: 78°
Birefringence · 1
Tephroite → δ = 0.101
Category · 1
Tephroite → Silicate mineral
Cleavage · 1
Tephroite → {010}, distinct; {001}, imperfect
Color · 1
Tephroite → Olive-green, bluish green, gray, °esh-red, reddish brown; pale green in thin section, may be colorless
Crystal class · 1
Tephroite → Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m)
Crystal habit · 1
Tephroite → Crystals typically short, prismatic, to 4 cm, or anhedral, equidimensional. Commonly in disseminated grains, compact, or massive.
Crystal system · 1
Tephroite → Orthorhombic
Diaphaneity · 1
Tephroite → Transparent to translucent
Formula · 1
Tephroite → Mn2SiO4

Important terminology

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

Important terminology

olivine occurs also group crystal gray manganese minerals found formula mn2sio4 may hardness specific gravity color olive-green brown references reddish

Tephroite relationships Subject–Predicate–Object triples

TTTA extracted 24 structured relationships around Tephroite. Examples in this analysis include Tephroite → 2V angle → Measured: 60° to 70°, Calculated: 78° and Tephroite → Birefringence → δ = 0.101. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Tephroite2V angleMeasured: 60° to 70°, Calculated: 78°1.00infobox
TephroiteBirefringenceδ = 0.1011.00infobox
TephroiteCategorySilicate mineral1.00infobox
TephroiteCleavage{010}, distinct; {001}, imperfect1.00infobox
TephroiteColorOlive-green, bluish green, gray, °esh-red, reddish brown; pale green in thin section, may be colorless1.00infobox
TephroiteCrystal classDipyramidal (mmm) H-M symbol: (2/m 2/m 2/m)1.00infobox
TephroiteCrystal habitCrystals typically short, prismatic, to 4 cm, or anhedral, equidimensional. Commonly in disseminated grains, compact, or massive.1.00infobox
TephroiteCrystal systemOrthorhombic1.00infobox
TephroiteDiaphaneityTransparent to translucent1.00infobox
TephroiteFormulaMn2SiO41.00infobox
TephroiteFractureUneven to conchoidal1.00infobox
TephroiteIMA symbolTep1.00infobox
TephroiteLusterVitreous to greasy1.00infobox
TephroiteMohs scale hardness61.00infobox
TephroiteOptical propertiesBiaxial (−)1.00infobox
TephroitePleochroismWeak; X = brownish red; Y = reddish; Z = greenish blue.1.00infobox
TephroiteRefractive indexnα = 1.759 nβ = 1.797 nγ = 1.8601.00infobox
TephroiteSpace groupPnma (no. 62)1.00infobox
TephroiteSpecific gravity3.87 – 4.121.00infobox
TephroiteStreakPale gray1.00infobox
TephroiteTenacityBrittle1.00infobox
TephroiteTwinningUncommon on {011}1.00infobox
TephroiteUnit cella = 4.88(2) Å, b = 10.61(2) Å c = 6.24(2) Å; Z = 41.00infobox
Tephroiteis amanganese endmember of the olivine group of nesosilicate minerals with the formula Mn2SiO40.90text

Related concept clusters Concept neighborhoods

The concept neighborhoods around Tephroite bring nearby vocabulary together. In this analysis, examples include Group, Formula and Minerals. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Tephroite
    • Group
    • Formula
    • Minerals
    • Mn2sio4
    • Olivine
    • Endmember
    • Fayalite
    • Forsterite
    • Nesosilicate
    • Gravity
    • Hardness
    • Manganese
  • tephroite
    • Group
    • Formula
    • Minerals
    • Mn2sio4
    • Olivine
    • Endmember
    • Fayalite
    • Forsterite
    • Nesosilicate
    • Gravity
    • Hardness
    • Manganese
  • zincite
    • Bustamite
    • Diopside
    • Franklinite
    • Gageite
    • Glaucochroite
    • Jacobsite
    • Manganocalcite
    • Rhodonite
    • Willemite
    • Occurs
  • franklinite
    • Bustamite
    • Diopside
    • Gageite
    • Glaucochroite
    • Jacobsite
    • Manganocalcite
    • Rhodonite
    • Willemite
    • Zincite
    • Occurs
  • diopside
    • Bustamite
    • Franklinite
    • Gageite
    • Glaucochroite
    • Jacobsite
    • Manganocalcite
    • Rhodonite
    • Willemite
    • Zincite
    • Occurs
  • bustamite
    • Diopside
    • Franklinite
    • Gageite
    • Glaucochroite
    • Jacobsite
    • Manganocalcite
    • Rhodonite
    • Willemite
    • Zincite
    • Occurs
  • olivine
    • Divalent
    • Nesosilicate
    • Tephroite
    • Formula
    • May
    • Minerals
    • Mn2sio4
    • Crystal
    • Group
  • jacobsite
    • Bustamite
    • Diopside
    • Gageite
    • Glaucochroite
    • Manganocalcite
    • Rhodonite
    • Willemite
    • Zincite
    • Occurs

Connections between topic areas Semantic bridges

Bridges highlight paths between different parts of the Tephroite map and can reveal research angles that are easy to miss in a flat list.

Min side: 3

Map overview Semantic statistics

Tephroite

Nodes30
Edges29
Triples24
Avg. degree1.93
Density0.066667
Components1

Source & methodology

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

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

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