Hingganite-(Y) Mineral Data

Hingganite-(Y) Mineral Data +

General Hingganite-(Y) Information

Chemical Formula:

Y2([ ])Be2Si2O8(OH)2

Composition:

Molecular Weight = 414.02 gm

Yttrium 42.95 % Y 54.54 % Y₂O₃

Beryllium 4.35 % Be 12.08 % BeO

Silicon 13.57 % Si 29.03 % SiO₂

Hydrogen 0.49 % H 4.35 % H₂O

Oxygen 38.64 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Y₂Be₂Si₂O₈(OH)₂

Environment:

In a Be-and REE-bearing granophyre in Manchuria, China.

IMA Status:

Approved IMA 1983

Locality:

Heilonghiang, and greater Khingan area, Manchuria, China. Link to MinDat.org Location Data.

Name Origin:

Named for it's locality.

Synonym:

Yberisilite

Yttroceberite

Yttroceberysilite

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Hingganite-(Y) Crystallography

Axial Ratios:

a:b:c =1.3009:1:0.5692

Cell Dimensions:

a = 9.895, b = 7.606, c = 4.33, Z = 2; beta = 90.17° V = 325.88 Den(Calc)= 4.22

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/a

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.84(1), 3.11(0.8), 3.12(0.8),2.54(0.5), 2.55(0.5), 2.2(0.3), 1.97(0.3),

Physical Properties of Hingganite-(Y)

Cleavage:

None

Color:

Green, Yellow brown, White, Light blue, Light yellow.

Density:

4.83

Diaphaniety:

Transparent

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Wheat Sheaf - Bundle shaped aggregates resembling wheat sheafs after hand reaping wheat.

Hardness:

6-7 - Orthoclase-Quartz

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Hingganite-(Y)

Gladstone-Dale:

CI meas= 0.204 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.089 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1794,KPDmeas= 0.1567,KC= 0.1969

Optical Data:

Biaxial (+), a=1.744-1.748, b=1.752-1.765, g=1.75-1.783, bire=0.0060-0.0350, 2V(Meas)=80. Dispersion r

Calculated Properties of Hingganite-(Y)

Electron Density:

r_electron=4.00 gm/cc
note: r_{Hingganite-(Y)}=4.22 gm/cc.

Fermion Index

Fermion Index = 0.05005
Boson Index = 0.94995

Photoelectric:

PE_{Hingganite-(Y)}= 53.82 barns/electron
U=PE_{Hingganite-(Y)} x r_electron= 215.06 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Hingganite-(Y) is Not Radioactive

Hingganite-(Y) Classification

Dana Class:

54.2.1a.3 (54)Nesosilicate Borosilicates and Some Beryllosilicates

(54.2)with B in [4] coordination

(54.2.1a)Datolite group (Datolite series)

54.2.1a.1 Datolite CaBSiO4(OH) P 2₁/c 2/m

54.2.1a.2 Hingganite-(Ce) Ce2Be2(SiO4)2(OH)2 P 2₁/a 2/m

54.2.1a.3 Hingganite-(Y) Y2([])Be2Si2O8(OH)2 P 2₁/a 2/m

54.2.1a.4 Hingganite-(Yb) (Yb,Y)2([])Be2Si2O8(OH)2 P 2₁/a 2/m

54.2.1a.5 Calcybeborosilite-(Y)! (REE,Ca)2[](B,Be)2(SiO4)2(OH,O)2 P 2₁/a 2/m

Strunz Class:

VIII/B.29-70 VIII - Silicates

VIII/B - Nesosubsilicates, with anions unfamiliar to tetraheders, with beryllium and boron

VIII/B.29 - Datolite/Gadolinite group

VIII/B.29-10 Datolite CaBSiO4(OH) P 2₁/c 2/m

VIII/B.29-20 Bakerite Ca4B4(BO4)(SiO4)3(OH)3·(H2O) P 2₁/c 2/m

VIII/B.29-30 Homilite Ca2(Fe,Mg)B2Si2O10 P 2₁/a 2/m

VIII/B.29-35 Vistepite Mn4SnB2(SiO4)4(OH)2 P1 1

VIII/B.29-40 Minasgeraisite-(Y) CaY2Be2Si2O10 P 2₁/a 2/m

VIII/B.29-50 Gadolinite-(Y) Y2FeBe2Si2O10 P 2₁/a 2/m

VIII/B.29-60 Gadolinite-(Ce) (Ce,La,Nd,Y)2FeBe2Si2O10 P 2₁/c 2/m

VIII/B.29-70 Hingganite-(Y) Y2([])Be2Si2O8(OH)2 P 2₁/a 2/m

VIII/B.29-80 Hingganite-(Ce) Ce2Be2(SiO4)2(OH)2 P 2₁/a 2/m

VIII/B.29-90 Hingganite-(Yb) (Yb,Y)2([])Be2Si2O8(OH)2 P 2₁/a 2/m

VIII/B.29-100 Calcybeborosilite-(Y)! (REE,Ca)2[](B,Be)2(SiO4)2(OH,O)2 P 2₁/a 2/m

Other Hingganite-(Y) Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Hingganite-(Y) :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (MinSocAm) 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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Hingganite-(Y)

Y2([ ])Be2Si2O8(OH)2
Dana No: 54.2.1a.3 Strunz No: VIII/B.29-70
Locality:

Notes: