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Labradorite: Overview, Occurrence & Spectrolite

Labradorite ((Ca, Na)(Al, Si)4O8) is a calcium-enriched feldspar mineral first identified in Labrador, Canada, which can display an iridescent effect (schiller).

Language: English [EN]
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Labradorite topic overview

The analysis highlights Overview, Occurrence and Spectrolite as prominent areas in the source structure around Labradorite.

Related topics
45
Source areas
4
Connected nodes
49
Extracted relationships
75
Concept neighborhoods
23
Bridge connections
49

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 · 23 topics
Occurrence · 8 topics
Spectrolite · 8 topics
Labradorescence · 6 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: 85°
Birefringence
δ = 0.008–0.010
Category
Tectosilicate minerals
Cleavage
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
Color
Gray, gray-white, or colorless with blue, pale green, or brown iridescence Spectrolite: may display pink, orange, or purple iridescence
Crystal class
Pinacoidal (1)

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

Occurrence

Labradorescence

Spectrolite

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 Labradorite connects Entity context

The extracted context around Labradorite shows recurring relationship patterns in the source. For example, Labradorite → Australia, Canada, China, Common, Finland, It, Labrador, Madagascar, Nain, Norway, Paul's Island, Poland, Slovakia, The, United States Another extracted example is Labradorite → Aarne Laitakari, Canada, Due, Finland, Finnish, It, Madagascar, Pekka, Salpa Line, Sometimes, Spectrolite, Ylämaa. Use these groups to spot repeated connection types before inspecting the individual relationships.

Labradorite

Top relations

related to Occurrence · 15
Labradorite → Australia, Canada, China, Common, Finland, It, Labrador, Madagascar, Nain, Norway, Paul's Island, Poland, Slovakia, The, United States
related to Spectrolite · 12
Labradorite → Aarne Laitakari, Canada, Due, Finland, Finnish, It, Madagascar, Pekka, Salpa Line, Sometimes, Spectrolite, Ylämaa
related to Gallery · 7
Labradorite → Finland, FinlandSpectrolite, MadagascarDetail, Polished, UCL Geology, Video, Ylämaa
related to Labradorescence · 6
Labradorite → Baron Rayleigh, Bøggild, Contributions, Ove Balthasar Bøggild, Robert Strutt, The
related to External links · 4
Labradorite → Cambridge University Press, Chisholm, Encyclopædia Britannica, Hugh
related to References · 2
Labradorite → Geologi, Seppo Lahti
2V angle · 1
Labradorite → Measured: 85°
Birefringence · 1
Labradorite → δ = 0.008–0.010
Category · 1
Labradorite → Tectosilicate minerals
Cleavage · 1
Labradorite → Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}

Important terminology

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

Important terminology

spectrolite labradorescence plagioclase effect common al si display white anorthite finland madagascar ylämaa feldspar schiller lamellar crystal iridescent ca na

Labradorite relationships Subject–Predicate–Object triples

TTTA extracted 75 structured relationships around Labradorite. Examples in this analysis include Labradorite → 2V angle → Measured: 85° and Labradorite → Birefringence → δ = 0.008–0.010. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Labradorite2V angleMeasured: 85°1.00infobox
LabradoriteBirefringenceδ = 0.008–0.0101.00infobox
LabradoriteCategoryTectosilicate minerals1.00infobox
LabradoriteCleavagePerfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}1.00infobox
LabradoriteColorGray, gray-white, or colorless with blue, pale green, or brown iridescence Spectrolite: may display pink, orange, or purple iridescence1.00infobox
LabradoriteCrystal classPinacoidal (1)1.00infobox
LabradoriteCrystal habitCrystals typically thin and tabular, rhombic in cross section, striated; massive1.00infobox
LabradoriteCrystal systemTriclinic1.00infobox
LabradoriteDiaphaneityTranslucent to transparent1.00infobox
LabradoriteDispersionNone1.00infobox
LabradoriteFormula(Ca,Na)(Al,Si)4O8 (Na:Ca = 30:70 to 50:50)1.00infobox
LabradoriteFractureUneven to conchoidal1.00infobox
LabradoriteGroupFeldspar group1.00infobox
LabradoriteIMA statusVariety of anorthite1.00infobox
LabradoriteLusterVitreous to pearly on cleavages1.00infobox
LabradoriteMohs scale hardness6–6.51.00infobox
LabradoriteOptical propertiesBiaxial (+)1.00infobox
LabradoriteOther characteristicsLabradorescence (iridescence, schiller optical effect)1.00infobox
LabradoriteRefractive indexnα = 1.554–1.563 nβ = 1.559–1.568 nγ = 1.562–1.5731.00infobox
LabradoriteSeriesPlagioclase feldspar series1.00infobox
LabradoriteSpace groupP1 (no. 2)1.00infobox
LabradoriteSpecific gravity2.68 to 2.721.00infobox
LabradoriteStreakWhite1.00infobox
LabradoriteTwinningCommon by albite, pericline, Carlsbad, Baveno, or Manebach twin laws1.00infobox
LabradoriteUnit cella = 8.155 Å, b = 12.84 Å c = 10.16 Å; α = 93.5° β = 116.25°, γ = 89.133°; Z = 61.00infobox
Labradoriteis aintermediate to calcic member of the plagioclase series0.90text

Related concept clusters Concept neighborhoods

The concept neighborhoods around Labradorite bring nearby vocabulary together. In this analysis, examples include Labradorescence, Spectrolite and Display. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Labradorite
    • Labradorescence
    • Spectrolite
    • Display
    • Effect
    • Feldspar
    • Iridescent
    • Schiller
    • Variety
    • Al
    • Si
    • P1
    • Anorthite
  • labradorite
    • Labradorescence
    • Spectrolite
    • Display
    • Effect
    • Feldspar
    • Iridescent
    • Schiller
    • Variety
    • Al
    • Si
    • P1
    • Anorthite
  • feldspar
    • Na
    • Variety
    • Si
    • Basalt
    • Gabbro
    • Mafic
    • P1
    • Triclinic
    • Labradorite
    • Also
    • Anorthite
    • Canada
  • al
    • Si
    • Ca
    • Na
    • Anorthite
    • Feldspar
    • Separation
    • Lamellar
    • Plagioclase
    • Labradorite
    • P1
    • Triclinic
    • Also
  • ca
    • Na
    • Al
    • Si
    • Feldspar
    • Plagioclase
    • P1
    • Triclinic
    • Also
    • Anorthite
    • Canada
    • Crystal
    • Iridescent
  • labradorescence
    • Labradorite
    • Spectrolite
    • P1
    • Schiller
    • Variety
    • Triclinic
    • Twinning
    • Also
    • Anorthite
    • Na
    • White
    • Colours
  • anorthite
    • Si
    • P1
    • Triclinic
    • Ca
    • Crystal
    • Feldspar
    • Na
    • Occurs
    • Variety
    • Separation
    • Labradorite
    • Lamellar
  • na
    • Si
    • Plagioclase
    • P1
    • Triclinic
    • Also
    • Anorthite
    • Crystal
    • Mineral
    • Schiller
    • Variety
    • Separation
    • Lamellar

Connections between topic areas Semantic bridges

For Labradorite, one of the stronger structural bridges in this analysis connects Labradorite with Overview. 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
LabradoriteOverview · splits 26 ⟂ 24
LabradoriteOccurrence · splits 41 ⟂ 9
LabradoriteSpectrolite · splits 41 ⟂ 9
LabradoriteLabradorescence · splits 43 ⟂ 7

Map overview Semantic statistics

Labradorite

Nodes50
Edges49
Triples75
Avg. degree1.96
Density0.04
Components1

Source & methodology

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

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

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