Research any topic before you write.

Find related topics. | Discover entities. | See connections. | Build a topical map.

Phosgenite

Phosgenite is a rare mineral consisting of lead carbonate chloride, (PbCl)2CO3. The tetragonal crystals are prismatic or tabular in habit: they are usually colorless and transparent, and have a brilliant adamantine lustre. Sometimes the crystals have a curious helical twist about the tetrad or principal axis. The hardness is 3 and the specific gravity…

Name and occurrence & Overview

Use the mouse wheel or two fingers (on touchscreens) to zoom in and out of the map.

Research this topic

Explore the main themes, entities and connections around Phosgenite. Start with the topic map, then use the sections below for research and deeper semantic analysis.

Explore this topic

Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.

Key facts & relationships

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

Birefringence
δ = 0.027
Category
Carbonate minerals
Cleavage
Distinct on {001} and {110}, indistinct on {100}
Color
Pale yellow to yellowish brown, pale brown, smoky brown, smoky violet, colorless, pale rose, gray, yellowish gray, pale green
Crystal class
Ditetragonal dipyramidal (4/mmm) H-M symbol: (4/m 2/m 2/m)
Crystal habit
Short prismatic crystals, granular, massive

Topics to explore

Browse the full topic structure. Each item opens a new analysis centered on that subject.

Overview

Name and occurrence

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.

Map overview Semantic statistics

Phosgenite

Nodes42
Edges41
Triples68
Avg. degree1.95
Density0.047619
Components1

How this topic connects Entity context

See the strongest relationship patterns around the current topic before diving into the raw triples.

Phosgenite

Top relations

related to Name and occurrence · 43
Phosgenite → Altai, Arizona, August Breithaupt, Baja California Sur, Boleo, Broken Hill, Colorado, Cromford, Crystals, Custer County, Doña Ana County, Dundas, Greece, Iglesias, In, It, Laurium, Mammoth, Matlock, Monteponi
Birefringence · 1
Phosgenite → δ = 0.027
Category · 1
Phosgenite → Carbonate minerals
Cleavage · 1
Phosgenite → Distinct on {001} and {110}, indistinct on {100}
Color · 1
Phosgenite → Pale yellow to yellowish brown, pale brown, smoky brown, smoky violet, colorless, pale rose, gray, yellowish gray, pale green
Crystal class · 1
Phosgenite → Ditetragonal dipyramidal (4/mmm) H-M symbol: (4/m 2/m 2/m)
Crystal habit · 1
Phosgenite → Short prismatic crystals, granular, massive
Crystal system · 1
Phosgenite → Tetragonal
Diaphaneity · 1
Phosgenite → Transparent to translucent
Formula · 1
Phosgenite → (PbCl)2CO3

Important terminology Word statistics

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

Important terminology

crystals lead mineral also mine carbonate 2co3 tetragonal prismatic hardness sectile name pbcl habit colorless transparent adamantine specific gravity references

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
PhosgeniteBirefringenceδ = 0.0271.00infobox
PhosgeniteCategoryCarbonate minerals1.00infobox
PhosgeniteCleavageDistinct on {001} and {110}, indistinct on {100}1.00infobox
PhosgeniteColorPale yellow to yellowish brown, pale brown, smoky brown, smoky violet, colorless, pale rose, gray, yellowish gray, pale green1.00infobox
PhosgeniteCrystal classDitetragonal dipyramidal (4/mmm) H-M symbol: (4/m 2/m 2/m)1.00infobox
PhosgeniteCrystal habitShort prismatic crystals, granular, massive1.00infobox
PhosgeniteCrystal systemTetragonal1.00infobox
PhosgeniteDiaphaneityTransparent to translucent1.00infobox
PhosgeniteFormula(PbCl)2CO31.00infobox
PhosgeniteFractureConchoidal1.00infobox
PhosgeniteIMA symbolPho1.00infobox
PhosgeniteLusterAdamantine1.00infobox
PhosgeniteMohs scale hardness2–31.00infobox
PhosgeniteOptical propertiesUniaxial (+); anomalously biaxial if strained1.00infobox
PhosgenitePleochroismWeakly pleochroic with O – reddish and E – greenish in thick sections.1.00infobox
PhosgeniteRefractive indexnω = 2.118 nε = 2.1451.00infobox
PhosgeniteSolubilitySoluble in dilute nitric acid with effervescence, decomposes slowly in cold water1.00infobox
PhosgeniteSpace groupP4/mbm1.00infobox
PhosgeniteSpecific gravity6.12 – 6.151.00infobox
PhosgeniteStreakWhite1.00infobox
PhosgeniteStrunz classification5.BE.201.00infobox
PhosgeniteTenacitySectile, flexible perpendicular to {001}1.00infobox
PhosgeniteUltraviolet fluorescenceFluoresces yellow under LW and SW UV1.00infobox
PhosgeniteUnit cella = 8.16 Å, c = 8.883(6) Å; Z = 41.00infobox
Phosgeniteis arare mineral consisting of lead carbonate chloride0.90text

Related concept clusters Concept neighborhoods

These clusters group vocabulary that occurs around closely connected concepts in the source material.

    Connections between topic areas Semantic bridges

    Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.

    Min side: 3
    For writers, content strategists, SEOs, marketers and creators — from quick topic research to advanced semantic analysis.