Annite

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

Export map as:

Research this topic

Explore the main themes, entities and connections around Annite. 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.

Overview

Phyllosilicate Mica Iron Biotite Magnesium

17 related topics

Properties

Pleochroic

1 related topics

Key facts & relationships

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

2V angle: Calculated: 12° to 36°
Category: Phyllosilicate minerals
Cleavage: Perfect in one direction {001}
Color: Brown to black
Crystal class: Prismatic (2/m) (same H-M symbol)
Crystal habit: Usually in "blocks" of thin sheets or as aggregations of foliated thin scales. Includes large, well formed pseudohexagonal prisms up to 12 cm across and 15 cm long.

Topics to explore

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

Overview

Phyllosilicate
Mica
Iron
Biotite
Magnesium
Phlogopite
Twins Crystal twinning
Cape Ann
Rockport Rockport, Massachusetts
Essex County Essex County, Massachusetts
Pikes Peak
El Paso County El Paso County, Colorado
Igneous Igneous rock
Metamorphic rocks
Fluorite
Zircon
Type locality Type locality (geology)

Properties

Pleochroic

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

Nodes21

Edges20

Triples38

Avg. degree1.9

Density0.095238

Components1

How this topic connects Entity context

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

Annite

Top relations

related to Properties · 6

Annite → However, It, Minerals, Relief, The, When

related to Uses · 3

Annite → Because, More, This

is a · 2

Annite → iron end member of the biotite mica group, phyllosilicate mineral in the mica family

2V angle · 1

Annite → Calculated: 12° to 36°

Category · 1

Annite → Phyllosilicate minerals

Cleavage · 1

Annite → Perfect in one direction {001}

Color · 1

Annite → Brown to black

Crystal class · 1

Annite → Prismatic (2/m) (same H-M symbol)

Crystal habit · 1

Annite → Usually in "blocks" of thin sheets or as aggregations of foliated thin scales. Includes large, well formed pseudohexagonal prisms up to 12 cm across and 15 cm long.

Crystal system · 1

Annite → Monoclinic

Important terminology Word statistics

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

Important terminology

mineral mica magnesium biotite group cleavage properties phyllosilicate relief light also brown county occurs monoclinic twins igneous minerals index formula

Entity relationships Subject–Predicate–Object triples

Subject	Predicate	Object	Confidence	Src
Annite	2V angle	Calculated: 12° to 36°	1.00	infobox
Annite	Category	Phyllosilicate minerals	1.00	infobox
Annite	Cleavage	Perfect in one direction {001}	1.00	infobox
Annite	Color	Brown to black	1.00	infobox
Annite	Crystal class	Prismatic (2/m) (same H-M symbol)	1.00	infobox
Annite	Crystal habit	Usually in "blocks" of thin sheets or as aggregations of foliated thin scales. Includes large, well formed pseudohexagonal prisms up to 12 cm across and 15 cm long.	1.00	infobox
Annite	Crystal system	Monoclinic	1.00	infobox
Annite	Diaphaneity	Translucent to transparent	1.00	infobox
Annite	Formula	KFe32+AlSi3O10(OH,F)2	1.00	infobox
Annite	Fracture	Uneven	1.00	infobox
Annite	Group	Mica group, trioctahedral mica group, biotite subgroup	1.00	infobox
Annite	IMA symbol	Ann	1.00	infobox
Annite	Luster	Submetallic to vitreous; pearly on cleavage surfaces	1.00	infobox
Annite	Mohs scale hardness	2.5–3	1.00	infobox
Annite	Optical properties	Biaxial (−)	1.00	infobox
Annite	Other characteristics	Diagnostic: occurrence: in magnesium poor igneous and metamorphic rocks.	1.00	infobox
Annite	Pleochroism	X = brown; Y = Z = dark brown	1.00	infobox
Annite	Refractive index	nα = 1.625 – 1.631 nβ = 1.690 nγ = 1.691 – 1.697	1.00	infobox
Annite	Space group	C2/m	1.00	infobox
Annite	Specific gravity	Approximately 3.3	1.00	infobox
Annite	Streak	Brownish white	1.00	infobox
Annite	Strunz classification	9.EC.20	1.00	infobox
Annite	Tenacity	Flexible	1.00	infobox
Annite	Twinning	Contact twins with composition surface on {001} and twin axis {310}	1.00	infobox
Annite	Unit cell	a = 5.39, b = 9.33 c = 10.29 [Å]; β = 100°; Z = 2	1.00	infobox
Annite	is a	phyllosilicate mineral in the mica family	0.90	text
Annite	is a	iron end member of the biotite mica group	0.90	text

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