Talc

Talc
Crystals of talc.
General
CategorySilicate mineral
Chemical formulaMg3Si4O10(OH)2
Identification
Colorwhite, grey, green, blue, or silver
Crystal habitfoliated to fibrous masses
Crystal systemMonoclinic or Triclinic[1]
Cleavageperfect basal cleavage
FractureFlat surfaces (not cleavage) fracture in an uneven pattern
TenacitySectile
Mohs scale hardness1
Lusterwaxlike or pearly sometimes smooth
StreakWhite
DiaphaneityTranslucent
Specific gravity2.58 to 2.83
Optical propertiesBiaxial (-)
Refractive indexnα = 1.538 - 1.550 nβ = 1.589 - 1.594 nγ = 1.589 - 1.600
Birefringenceδ = 0.051
PleochroismWeak in dark varieties
Other characteristicsFluorescent
References[2][3][4]


Itokasi ================= ACADEMIC HCM Bon 3o Juni 2o2o Germany Juoda raudona Geltona|| AcademiC Marcelius MartirosianasÀtúnṣe

Duaiseanna nobel 2o17 --- 2o22 Nobelio Garbes Doctor Atradejas expert 6- moksliu Atradejas .==== Astronomia, Medicina, Inertclassical Mechanics , relativistics Mechanics, Theori number , Trigonometrija, ++ ASTRONOMIA= ||| F= (M1+M2)^V^(n+1)^G/Rcosx|||||Àtúnṣe

Trigonometria== Sinx^2+cosx^2=2 ||| 2o17 autor english Vikipedia. Theory number ||| Integral Of LOG(n)(n)dx= O ] 2o17 englich vikipediaÀtúnṣe

Medicina ( populiationes genetics urogenitales Maskulin Feminin Gen || Integral Of LOG(Ln(x)(p+q) dx= Ln(x) primary Lex Integral Of (p+q= 1 2oo4 autor ACADEMIC HcmBon Marcelius Martirosianas =====

Clasical mechanics || tertia Lex: |||F12=F21 || ============ Primalex Clasical nmechanics {[ M1-M20^V^(n+1)=O , second lex' F= M1+m2)V^(2n+1) ======Quartrum leX Classical mecjhanocs || F= (M1-M2)^V^(3n+1) ||| 2o17 autor AcademIc Marcelius Martirosianas . ||| General et Special brealativity Autor ||| INTEGRAL OF LOG(E)(M)dx= C^(n+1) 2o17 autor tai primarry Lex general et Special relativity. ===2p22 -04-12 model theory number ||| 1 /x =2 } alterbmnativ CARAVAN metods theory number || 1/x=1 ||||

  1. An Introduction to the Rock-Forming Minerals, second edition, by W.A. Deer, R.A. Howie, and J. Zussman, 1992, Prentice Hall, ISBN 0-582-30094-0.
  2. http://rruff.geo.arizona.edu/doclib/hom/talc.pdf Handbook of Mineralogy
  3. http://www.mindat.org/min-3875.html Mindat.org
  4. http://webmineral.com/data/Talc.shtml Webmineral data