Graphite

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Graphite
GraphiteUSGOV.jpg
Graphite specimen
General
Category Native meeneral
Formula
(repeatin unit)
C
Strunz clessification 1.CB.05a
Creestal seestem Hexagonal
Creestal cless Dihexagonal dipyramidal (6mmm)
H-M symbol: (6/m 2/m 2/m)
Space group P63/mmc
Unit cell a = 2.461, c = 6.708 [Å]; Z = 4
Identification
Colour Iron-black to steel-gray; deep blue in transmitted light
Creestal habit Tabular, six-sided foliated masses, granular to compacted masses
Twinnin Present
Cleavage Basal – perfect on {0001}
Fractur Flaky, ithergates rouch when nae on cleavage
Tenacity Flexible non-elastic, sectile
Mohs scale haurdness 1–2
Skinkle Metallic, yirdy
Streak Black
Diaphaneity Opaque, transparent anerly in extremely thin flakes
Density 2.09–2.23 g/cm3
Optical properties Uniaxial (–)
Pleochroism Strang
Solubility Soluble in molten nickel, warm chlorosulfuric acid[1]
Ither chairacteristics strangly 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.