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පළිඟු

විකිපීඩියා වෙතින්
පළිඟු
Quartz crystal cluster from Tibet
General
CategorySilicate mineral
රසායනික සූත්‍රයSiO2
Strunz classification04.DA.05
Dana classification75.01.03.01
Crystal symmetryTrigonal 32
Unit cella = 4.9133 Å, c = 5.4053 Å; Z=3
Identification
පාට / පැහැයColorless through various colors to black
Crystal habit6-sided prism ending in 6-sided pyramid (typical), drusy, fine-grained to microcrystalline, massive
Crystal systemα-quartz: trigonal trapezohedral class 3 2; β-quartz: hexagonal 622[1]
TwinningCommon Dauphine law, Brazil law and Japan law
Cleavage{0110} Indistinct
FractureConchoidal
Tenacityකැඩෙනසුළු
Mohs scale hardness7 – lower in impure varieties (defining mineral)
LusterVitreous – waxy to dull when massive
Streakසුදු
DiaphaneityTransparent to nearly opaque
Specific gravity2.65; variable 2.59–2.63 in impure varieties
Optical propertiesUniaxial (+)
Refractive indexnω = 1.543–1.545
nε = 1.552–1.554
Birefringence+0.009 (B-G interval)
Pleochroismනැත
Melting point1670 °C (β tridymite) 1713 °C (β cristobalite)[1]
SolubilityInsoluble at STP; 1 ppmmass at 400 °C and 500 lb/in2 to 2600 ppmmass at 500 °C and 1500 lb/in2[1]
Other characteristicsPiezoelectric, may be triboluminescent, chiral (hence optically active if not racemic)
References[2][3][4][5]

වර්ග (පාට අනුව)

[සංස්කරණය]
පාට / පැහැය නම
කිරි පැහැය තිරුවාණ
දම් දඹ පළිඟු
කොටුවේ පෙළ කොටුවේ පෙළ
කොටුවේ පෙළ කොටුවේ පෙළ
කොටුවේ පෙළ කොටුවේ පෙළ
කොටුවේ පෙළ කොටුවේ පෙළ
කොටුවේ පෙළ කොටුවේ පෙළ
කොටුවේ පෙළ කොටුවේ පෙළ
  1. ^ a b c Deer, W. A., R. A. Howie and J. Zussman, An Introduction to the Rock Forming Minerals, Logman, 1966, pp. 340–355 ISBN 0-582-44210-9
  2. ^ Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W. and Nichols, Monte C. (ed.). "Quartz". Handbook of Mineralogy (PDF). Vol. III (Halides, Hydroxides, Oxides). Chantilly, VA, US: Mineralogical Society of America. ISBN 0962209724.{{cite book}}: CS1 maint: multiple names: editors list (link)
  3. ^ Quartz. Mindat.org. Retrieved on 2013-03-07.
  4. ^ Quartz. Webmineral.com. Retrieved on 2013-03-07.
  5. ^ Hurlbut, Cornelius S.; Klein, Cornelis (1985). Manual of Mineralogy (20 ed.). ISBN 0-471-80580-7.{{cite book}}: CS1 maint: multiple names: authors list (link)
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