Phenakite

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Occurrence

Mica Schists Chrysoberyl Apatite Topaz

27 related topics

Overview

Orthosilicate Mineral Be Si Gemstone

15 related topics

Largest phenakite

Sri Lanka SL Rs.

2 related topics

Key facts & relationships

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Birefringence: δ = 0.017
Category: Nesosilicate
Cleavage: Distinct on {1120}, imperfect on {1011}
Color: Colorless, yellow, pink, brown
Crystal class: Rhombohedral (3) H-M symbol: (3)
Crystal habit: Tabular, prismatic to acicular crystals often as columnar aggregates, as spherulites and granular

Topics to explore

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Overview

Orthosilicate Silicate minerals
Mineral
Be Beryllium
Si Silicon
Gemstone
Crystals Crystal
Rhombohedral
Cleavage Cleavage (crystal)
Conchoidal
Mohs hardness Mohs scale of mineral hardness
Specific gravity
Quartz
Ancient Greek Ancient Greek language
Romanized Romanization of Ancient Greek
Nils Gustaf Nordenskiöld

Largest phenakite

Sri Lanka
SL Rs. Sri Lankan rupee

Occurrence

Advanced semantic analysis

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Map overview Semantic statistics

Nodes48

Edges47

Triples57

Avg. degree1.96

Density0.041667

Components1

How this topic connects Entity context

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Phenakite

Top relations

related to Occurrence · 28

Phenakite → Additionally, Alsace, British Museum, Colorado, For, Framont, Greenwood, Ilmen Mountains, It, Kragerø, Large, Maine, Mount Antero, Northern Cape, Norway, Noumas II Pegmatite, Orange River, Pikes Peak, Russia, Schirmeck

related to Largest phenakite · 7

Phenakite → Beruwala, Found, It, November, SL Rs, Sri Lanka, US

Birefringence · 1

Phenakite → δ = 0.017

Category · 1

Phenakite → Nesosilicate

Cleavage · 1

Phenakite → Distinct on {1120}, imperfect on {1011}

Color · 1

Phenakite → Colorless, yellow, pink, brown

Crystal class · 1

Phenakite → Rhombohedral (3) H-M symbol: (3)

Crystal habit · 1

Phenakite → Tabular, prismatic to acicular crystals often as columnar aggregates, as spherulites and granular

Crystal system · 1

Phenakite → Trigonal

Diaphaneity · 1

Phenakite → Transparent to translucent

Important terminology Word statistics

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Important terminology

crystals quartz found prismatic habit mineral gemstone nesosilicate occasionally topaz rhombohedral cleavage conchoidal be2sio4 fracture mohs hardness specific gravity colorless

Entity relationships Subject–Predicate–Object triples

Subject	Predicate	Object	Confidence	Src
Phenakite	Birefringence	δ = 0.017	1.00	infobox
Phenakite	Category	Nesosilicate	1.00	infobox
Phenakite	Cleavage	Distinct on {1120}, imperfect on {1011}	1.00	infobox
Phenakite	Color	Colorless, yellow, pink, brown	1.00	infobox
Phenakite	Crystal class	Rhombohedral (3) H-M symbol: (3)	1.00	infobox
Phenakite	Crystal habit	Tabular, prismatic to acicular crystals often as columnar aggregates, as spherulites and granular	1.00	infobox
Phenakite	Crystal system	Trigonal	1.00	infobox
Phenakite	Diaphaneity	Transparent to translucent	1.00	infobox
Phenakite	Formula	Be2SiO4	1.00	infobox
Phenakite	Fracture	Conchoidal	1.00	infobox
Phenakite	IMA symbol	Phk	1.00	infobox
Phenakite	Luster	Vitreous	1.00	infobox
Phenakite	Mohs scale hardness	7.5–8	1.00	infobox
Phenakite	Optical properties	Uniaxial (+)	1.00	infobox
Phenakite	Other characteristics	Bright blue cathodoluminescence	1.00	infobox
Phenakite	Refractive index	nω = 1.650 – 1.656 nε = 1.667 – 1.670	1.00	infobox
Phenakite	Space group	R3	1.00	infobox
Phenakite	Specific gravity	2.93–3.00	1.00	infobox
Phenakite	Strunz classification	9.AA.05	1.00	infobox
Phenakite	Tenacity	Brittle	1.00	infobox
Phenakite	Twinning	Penetration twins around {0001}	1.00	infobox
Phenakite	Unit cell	a = 12.438 Å, c = 8.231 Å; Z = 18	1.00	infobox

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