Qingheiite Mineral Data

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.

Name Pronunciation:

Qingheiite + Pronunciation

Synonym:

ICSD 89319

PDF 41-1418

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 - Prismatic H-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

Diaphaneity:

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= -0.011 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.056 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2025,KPDmeas= 0.1939,KC= 0.1917
Ncalc = 1.68 - 1.71

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:

Bulk Density (Electron Density)=3.61 gm/cc
note: Specific Gravity of Qingheiite =3.72 gm/cc.

Fermion Index:

Fermion Index = 0.0070371335
Boson Index = 0.9929628665

Photoelectric:

PE_Qingheiite= 7.39 barns/electron
U=PE_Qingheiite x rElectron Density= 26.64 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Qingheiite is Not Radioactive

Qingheiite Classification

Dana Class:

38.02.04.04 (38)Anhydrous Phosphates, etc

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

(38.02.04)Alluaudite-Wyllieite Group (Wyllieite Subgroup)

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

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

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

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

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

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

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

Strunz Class:

08.AC.15 08 - PHOSPHATES, ARSENATES, VANADATES

08.A - Phosphates, etc. without additional anions, without H2O

08.AC -With medium-sized and large cations

08.AC.15 Bobfergusonite Na2Mn5FeAl(PO4)6 P 2₁/n 2/m

08.AC.15 Ferrowyllieite (Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3 P 2₁/n 2/m

08.AC.15 Qingheiite Na2(Mn,Mg,Fe)(Al,Fe)(PO4)3 P 2₁/n 2/m

08.AC.15 Rosemaryite (Na,Ca,Mn)(Mn,Fe)(Fe,Fe,Mg)Al(PO4)3 P 2₁/n 2/m

08.AC.15 Wyllieite (Na,Ca,Mn)(Mn,Fe)(Fe,Fe,Mg)Al(PO4)3 P 2₁/n 2/m

08.AC.15 Ferrorosemaryite! []NaFeFeAl(PO4)3 P 2₁/n 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 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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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: 38.02.04.04 Strunz No: 08.AC.15
Locality:

Notes:

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