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හරිතමණී

විකිපීඩියා වෙතින්
හරිතමණී හෙවත් ජේඩයිට්
Jadeite from Burma
General
CategoryPyroxene group
රසායනික සූත්‍රයNaAlSi2O6 or Na(Al,Fe3+)Si2O6
Strunz classification9.DA.25
Crystal symmetryC2/c
Identification
පාට / පැහැයApple-green, emerald-green, bluish green, leek-green, purplish blue, greenish white, white, black, may show green spots, rarely blue or violet; colorless in thin section. Often also banded.
Crystal habitCommonly massive, or fibrous, granular; prismatic crystals rare
Crystal systemMonoclinic
TwinningSingle and lamellar twinning on [100] and [001]
CleavageGood on [110]
FractureSplintery
Mohs scale hardness6.5–7
LusterSubvitreous, pearly on cleavages
StreakWhite
DiaphaneityTranslucent
Specific gravity3.24 to 3.43
Polish lustervitreous to greasy[1]
Optical propertiesBiaxial (+)
Refractive indexnα = 1.654 – 1.673 nβ = 1.659 – 1.679 nγ = 1.667 – 1.693
Birefringenceδ = 0.013 – 0.020
Dispersionr > v; moderate to strong.
Ultraviolet fluorescenceDark colors are generally inert. Light green – inert to weak white in long wave, generally inert in short wave; light yellow – inert to weak green in long wave, generally inert in short wave; white – inert to weak in long wave, generally inert in short wave; light purple – inert to weak white or weak brownish red in long wave, generally inert in short wave; some dyed lavender colors – moderate to strong orange in long wave, weaker in short wave[1]
References[2][3][4]
  1. ^ a b (Gia), Gemological. Gem Reference Guide. City: Gemological Institute of America (GIA), 1988. ISBN 0-87311-019-6
  2. ^ "Handbook of Mineralogy : Jadeite Na(Al; Fe3+)Si2O6" (PDF). Rruff.geo.arizona.edu. සම්ප්‍රවේශය 25 January 2022.
  3. ^ "Jadeite: Mineral information, data and localities". Mindat.org.
  4. ^ "A to Z List". Webmineral.com.
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