Qingheiite Mineral Data

Qingheiite Mineral Data +

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General Qingheiite Information

Chemical Formula:

Na2(Mn++,Mg,Fe++)(Al,Fe+++)(PO4)3

Composition:

Molecular Weight = 461.08 gm

Sodium 6.48 % Na 8.74 % Na₂O

Calcium 0.87 % Ca 1.22 % CaO

Magnesium 5.80 % Mg 9.62 % MgO

Manganese 17.87 % Mn 23.08 % MnO

Aluminum 2.34 % Al 4.42 % Al₂O₃

Iron 4.84 % Fe 4.67 % FeO / 1.73 % Fe₂O₃

Phosphorus 20.15 % P 46.18 % P₂O₅

Oxygen 41.64 % O

______ ______

100.00 % 99.65 % = TOTAL OXIDE

Empirical Formula:

Na_1.3Mn²⁺_1.5Mg_1.1Fe²⁺_0.3Ca_0.1Al_0.4Fe³⁺_0.1(PO₄)₃

Environment:

In a muscovite-rich pegmatite.

IMA Status:

Approved IMA 1983

Locality:

Qinghe County, Xinjiang Uygur Autonomous Region, China. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

ICSD 89319

PDF 41-1418

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Qingheiite Crystallography

Axial Ratios:

a:b:c =0.9547:1:0.5173

Cell Dimensions:

a = 11.85, b = 12.411, c = 6.421, Z = 4; beta = 114.45° V = 859.65 Den(Calc)= 3.56

Crystal System:

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

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

By Intensity(I/I_o): 2.685(1), 3.472(0.9), 2.512(0.9),6.21(0.8), 2.86(0.7), 1.739(0.7), 3.082(0.6),

Physical Properties of Qingheiite

Cleavage:

[010] Indistinct

Color:

Yellow green, Jade green, Light yellow green.

Density:

3.718

Diaphaniety:

Semitransparent

Fracture:

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

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

5.5 - Knife Blade

Luster:

Vitreous (Glassy)

Optical Properties of Qingheiite

Gladstone-Dale:

CI meas= -0.06 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.107 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2025,KPDmeas= 0.1939,KC= 0.183

Optical Data:

Biaxial (+), a=1.678, b=1.684, g=1.691-1.91, bire=0.0130-0.2320, 2V(Calc)=22-86, 2V(Meas)=79. Dispersion r >> v strong.

Pleochroism (x):

light yellowish green.

Pleochroism (y):

jade green.

Pleochroism (z):

dark bluish green.

Calculated Properties of Qingheiite

Electron Density:

r_electron=3.61 gm/cc
note: r_Qingheiite=3.72 gm/cc.

Fermion Index

Fermion Index = 0.00703
Boson Index = 0.99297

Photoelectric:

PE_Qingheiite= 7.39 barns/electron
U=PE_Qingheiite x r_electron= 26.64 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Qingheiite is Not Radioactive

Qingheiite Classification

Dana Class:

38.2.4.4 (38)Anhydrous Phosphates, etc

(38.2)(A+ B++)5 (XO4)3

(38.2.4)Alluaudite-Wyllieite Group (Wyllieite Subgroup)

38.2.4.1 Ferrowyllieite (Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3 P 2₁/n 2/m

38.2.4.2 Wyllieite (Na,Ca,Mn)(Mn,Fe)(Fe,Fe,Mg)Al(PO4)3 P 2₁/n 2/m

38.2.4.3 Rosemaryite (Na,Ca,Mn)(Mn,Fe)(Fe,Fe,Mg)Al(PO4)3 P 2₁/n 2/m

38.2.4.4 Qingheiite Na2(Mn,Mg,Fe)(Al,Fe)(PO4)3 P 2₁/n 2/m

38.2.4.5 Bobfergusonite Na2Mn5FeAl(PO4)6 P 2₁/n 2/m

38.2.4.6 Bradaczekite! NaCu4(AsO4)3 C 2/c 2/m

38.2.4.7 Ferrorosemaryite! []NaFeFeAl(PO4)3 P 2₁/n 2/m

Strunz Class:

VII/A.06-10 VII - Phosphates, Arsenates and Vanadates

VII/A - Waterfree phosphates [PO4]3- without unfamiliar anions, cations of medium and big size: Mg, Mn,Fe, Cu, Zn, and Ca, Na

VII/A.06 - Alluaudite- Hagendorfite group

VII/A.06-10 Qingheiite Na2(Mn,Mg,Fe)(Al,Fe)(PO4)3 P 2₁/n 2/m

VII/A.06-20 Bobfergusonite Na2Mn5FeAl(PO4)6 P 2₁/n 2/m

VII/A.06-30 Ferrowyllieite (Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3 P 2₁/n 2/m

VII/A.06-40 Wyllieite (Na,Ca,Mn)(Mn,Fe)(Fe,Fe,Mg)Al(PO4)3 P 2₁/n 2/m

VII/A.06-50 Rosemaryite (Na,Ca,Mn)(Mn,Fe)(Fe,Fe,Mg)Al(PO4)3 P 2₁/n 2/m

VII/A.06-60 Ferroalluaudite NaCaFe(Fe,Mn,Fe,Mg)2(PO4)3 C 2/a 2/m

VII/A.06-70 Alluaudite NaCaFe(Mn,Fe,Fe,Mg)2(PO4)3 C 2/c 2/m

VII/A.06-80 Maghagendorfite NaMgMn(Fe,Fe)2(PO4)3 I 2₁/a 2/m

VII/A.06-85 Ferrohagendorfite* (Na,Ca)2Fe(Fe,Fe)2(PO4)3 I 2₁/a 2/m

VII/A.06-90 Hagendorfite NaCaMn(Fe,Fe,Mg)2(PO4)3 I 2₁/a 2/m

VII/A.06-100 Varulite NaCaMn(Mn,Fe,Fe)2(PO4)3 C 2/c 2/m

VII/A.06-110 Arseniopleite (Ca,Na)(Na,Pb)Mn(Mn,Mg,Fe)2(AsO4)3 I2/a 2/m

VII/A.06-120 Caryinite (Na,Pb)(Ca,Na)(Ca,Mn)(Mn,Mg)2(AsO4)3 I2/c 2/m

Other Qingheiite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(AntBidBlaNic4) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

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

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Print or Cut-and-Paste your Qingheiite Specimen Label here :

Qingheiite

Na2(Mn++,Mg,Fe++)(Al,Fe+++)(PO4)3
Dana No: 38.2.4.4 Strunz No: VII/A.06-10
Locality:

Notes: