Graphite

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Graphite
GraphiteUSGOV.jpg
Graphite specimen
General
CategoryNative meeneral
Formula
(repeatin unit)
C
Strunz clessification1.CB.05a
Creestal seestemHexagonal
Creestal clessDihexagonal dipyramidal (6mmm)
H-M symbol: (6/m 2/m 2/m)
Space groupP63/mmc
Unit cella = 2.461, c = 6.708 [Å]; Z = 4
Identification
ColourIron-black to steel-gray; deep blue in transmitted light
Creestal habitTabular, six-sided foliated masses, granular to compacted masses
TwinninPresent
CleavageBasal – perfect on {0001}
FracturFlaky, ithergates rouch when nae on cleavage
TenacityFlexible non-elastic, sectile
Mohs scale haurdness1–2
SkinkleMetallic, yirdy
StreakBlack
DiaphaneityOpaque, transparent anerly in extremely thin flakes
Density2.09–2.23 g/cm3
Optical propertiesUniaxial (–)
PleochroismStrang
SolubilitySoluble in molten nickel, warm chlorosulfuric acid[1]
Ither chairacteristicsstrangly anisotropic, conducts electricity, creashie feel, readily merks
References[2][3][4]

Graphite is a crystalline allotrope o carbon, a semimetal an a native element meeneral. Graphite is the maist stable form o carbon unner staundart conditions. Tharefore, it is uised in thermochemistry as the staundart state for definin the heat o formation o carbon compoonds.

References[eedit | eedit soorce]

  1. Liquid method: pure graphene production. Phys.org (May 30, 2010).
  2. Graphite. Mindat.org.
  3. Graphite. Webmineral.com.
  4. Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W.; Nichols, Monte C., eds. (1990). "Graphite". Handbook of Mineralogy (PDF). I (Elements, Sulfides, Sulfosalts). Chantilly, VA, US: Mineralogical Society of America. ISBN 0962209708.