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Todorokite: Characters, Other localities & Structure

Todorokite is a complex hydrous manganese oxide mineral with generic chemical formula (Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12·3-4H2O. It was named in 1934 for the type locality, the Todoroki mine, Hokkaido, Japan. It belongs to the prismatic class 2/m of the monoclinic crystal system, but the angle β between the a and c axes is close to 90°, making it seem…

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Todorokite topic overview

The analysis highlights Characters, Other localities and Structure as prominent areas in the source structure around Todorokite.

Related topics
125
Source areas
11
Connected nodes
136
Extracted relationships
128
Concept neighborhoods
27
Bridge connections
136

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.

Other localities · 37 topics
Structure · 17 topics
Occurrence and associations · 13 topics
Overview · 11 topics
Unit cell · 11 topics
Optical properties · 10 topics
Type locality · 7 topics
Appearance · 6 topics
Solubility · 5 topics
Other characteristics · 4 topics
Physical properties · 4 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.

Birefringence
nearly 0.02
Category
Manganese minerals
Cleavage
Perfect on {100} and {010}
Color
Dark brown or brownish black, brown in transmitted light
Crystal class
Prismatic (2/m) (same H-M symbol)
Crystal habit
Aggregates of minute lathlike crystals

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

Structure

Unit cell

Appearance

Optical properties

Physical properties

Solubility

Other characteristics

Type locality

Occurrence and associations

Other localities

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 Todorokite connects Entity context

The extracted context around Todorokite shows recurring relationship patterns in the source. For example, Todorokite → Ag, Although, Ba, Ba2, Ca2, Co2, Cu2, H2O, Manganese, Mg2, Mn2, Mn3, Mn4, Na, Ni2, O6, Pb2, The, These, This Another extracted example is Todorokite → Associated, At Saipan, At Sterling Hill, CaCO3, Charco Redondo, Cuba, It, Mariana Islands, New Jersey, Pacific Ocean, The, Zn2SiO4, ZnFe3, ZnMn4. Use these groups to spot repeated connection types before inspecting the individual relationships.

Todorokite

Top relations

related to Structure · 20
Todorokite → Ag, Although, Ba, Ba2, Ca2, Co2, Cu2, H2O, Manganese, Mg2, Mn2, Mn3, Mn4, Na, Ni2, O6, Pb2, The, These, This
related to United States · 14
Todorokite → Associated, At Saipan, At Sterling Hill, CaCO3, Charco Redondo, Cuba, It, Mariana Islands, New Jersey, Pacific Ocean, The, Zn2SiO4, ZnFe3, ZnMn4
related to Occurrence and associations · 13
Todorokite → Akaigawa, Although, At, Ca2Mn2, Hokkaido, It, Japan, MnCO3, OH, P2O5SO3, Pacific Ocean, SiO2, The
related to Austria · 9
Todorokite → At Huttenberg, Austria, Carinthia, Charco Redondo, Cuba, It, Mn4, O2, The
related to Cuba · 7
Todorokite → At Charco Redondo, Commonly, Cuba, Hardness, It, Oriente Province, The
related to Brazil · 6
Todorokite → Bahia, Brazil, Mn2, Saude, SiO4, Urandi
related to Optical properties · 6
Todorokite → All, For, In, The, This, When
related to Portugal · 6
Todorokite → Algarve, At Farragudo, It, Mn2, Mn4, Portugal
related to Solubility · 6
Todorokite → Cl2, H2SO4, HCl, HNO3, It, MnO2
related to Other characteristics · 4
Todorokite → Na4Mn14O27, This, When, X-ray

Important terminology

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

Important terminology

manganese brown fibrous crystal minerals dark parallel black mn4 luster also type light crystals hardness found occurs soft mineral formula

Todorokite relationships Subject–Predicate–Object triples

TTTA extracted 128 structured relationships around Todorokite. Examples in this analysis include Todorokite → Birefringence → nearly 0.02 and Todorokite → Category → Manganese minerals. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
TodorokiteBirefringencenearly 0.021.00infobox
TodorokiteCategoryManganese minerals1.00infobox
TodorokiteCleavagePerfect on {100} and {010}1.00infobox
TodorokiteColorDark brown or brownish black, brown in transmitted light1.00infobox
TodorokiteCrystal classPrismatic (2/m) (same H-M symbol)1.00infobox
TodorokiteCrystal habitAggregates of minute lathlike crystals1.00infobox
TodorokiteCrystal systemMonoclinic1.00infobox
TodorokiteDana classification7.8.1.11.00infobox
TodorokiteDiaphaneityOpaque, transparent in very thin slivers1.00infobox
TodorokiteFormula(Na,Ca,K,Ba,Sr) 1-x(Mn,Mg,Al) 6O 12·3-4H 2O1.00infobox
TodorokiteFormula mass583.05 g/mol1.00infobox
TodorokiteFusibilityDoes not fuse1.00infobox
TodorokiteIMA symbolTdr1.00infobox
TodorokiteLusterMetallic to dull, silky in aggregates1.00infobox
TodorokiteMohs scale hardness.mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .de…1.00infobox
TodorokiteOptical propertiesBiaxial1.00infobox
TodorokitePleochroismX = dark brown, Z = yellowish brown1.00infobox
TodorokiteRefractive indexGreater than 1.741.00infobox
TodorokiteSolubilitySoluble in acids1.00infobox
TodorokiteSpace groupP2/m (no. 11)1.00infobox
TodorokiteSpecific gravity3.5 to 3.81.00infobox
TodorokiteStreakBlack or dark brown1.00infobox
TodorokiteStrunz classification4.DK.10 (10 ed) 4/D.09-10 (8 ed)1.00infobox
TodorokiteTwinningContact twins are common1.00infobox
Todorokiteis acomplex hydrous manganese oxide mineral with generic chemical formula0.90text
Todorokiteis acommon product of oxidation and leaching of primary manganese carbonate and silicate minerals0.90text

Related concept clusters Concept neighborhoods

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

  • manganese oxide
    • Mn4
    • Minerals
    • Todorokite
    • Formula
    • Optical
    • Also
    • Crystals
    • Crystal
    • Monoclinic
    • Biaxial
    • Brownish
    • Cuba
  • monoclinic crystal system
    • Orthorhombic
    • Optical
    • Light
    • Monoclinic
    • Parallel
    • Biaxial
    • Formula
    • Minerals
    • Crystals
    • Cuba
    • Dark
    • Structure
  • manganese nodules
    • Mn4
    • Minerals
    • Todorokite
    • Formula
    • Optical
    • Also
    • Crystals
    • Crystal
    • Monoclinic
    • Biaxial
    • Brownish
    • Cuba
  • manganese
    • Mn4
    • Minerals
    • Todorokite
    • Formula
    • Optical
    • Also
    • Crystals
    • Crystal
    • Monoclinic
    • Biaxial
    • Brownish
    • Cuba
  • manganese nodule
    • Mn4
    • Minerals
    • Todorokite
    • Formula
    • Optical
    • Also
    • Crystals
    • Crystal
    • Monoclinic
    • Biaxial
    • Brownish
    • Cuba
  • manganese dioxide
    • Mn4
    • Minerals
    • Todorokite
    • Formula
    • Optical
    • Also
    • Crystals
    • Crystal
    • Monoclinic
    • Biaxial
    • Brownish
    • Cuba
  • manganese carbonate
    • Mn4
    • Minerals
    • Todorokite
    • Formula
    • Optical
    • Also
    • Crystals
    • Crystal
    • Monoclinic
    • Biaxial
    • Brownish
    • Cuba
  • biaxial
    • Orthorhombic
    • Optical
    • Light
    • Crystal
    • Minerals
    • Monoclinic
    • Brownish
    • Dull
    • Formula
    • Gravity
    • Hardness
    • Specific

Connections between topic areas Semantic bridges

For Todorokite, one of the stronger structural bridges in this analysis connects Todorokite with Other localities. 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
TodorokiteOther localities · splits 99 ⟂ 38
TodorokiteStructure · splits 119 ⟂ 18
TodorokiteOccurrence and associations · splits 123 ⟂ 14
TodorokiteOverview · splits 125 ⟂ 12
TodorokiteUnit cell · splits 125 ⟂ 12
TodorokiteOptical properties · splits 126 ⟂ 11
TodorokiteType locality · splits 129 ⟂ 8
TodorokiteAppearance · splits 130 ⟂ 7
TodorokiteSolubility · splits 131 ⟂ 6
TodorokitePhysical properties · splits 132 ⟂ 5
TodorokiteOther characteristics · splits 132 ⟂ 5

Map overview Semantic statistics

Todorokite

Nodes137
Edges136
Triples128
Avg. degree1.99
Density0.014599
Components1

Source & methodology

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

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

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