Daqingshanite-(Ce) Mineral Data

General Daqingshanite-(Ce) Information

Chemical Formula:

(Sr,Ca,Ba)3(Ce,La)(PO4)(CO3)3-x(OH,F)x

Composition:

Molecular Weight = 550.17 gm

Barium 4.99 % Ba 5.57 % BaO

Strontium 19.11 % Sr 22.60 % SrO

Calcium 4.37 % Ca 6.12 % CaO

Lanthanum 6.31 % La 7.40 % La₂O₃

Cerium 19.10 % Ce 22.37 % Ce₂O₃

Phosphorus 5.63 % P 12.90 % P₂O₅

Hydrogen 0.07 % H 0.65 % H₂O

Carbon 5.46 % C 20.00 % CO₂

Oxygen 34.61 % O

Fluorine 0.35 % F 0.35 % F

- % F -0.15 % -O=F₂

______ ______

100.00 % 97.82 % = TOTAL OXIDE

Empirical Formula:

Sr_1.2Ca_0.6Ba_0.2Ce_0.75La_0.25(PO₄)(CO₃)_2.5(OH)_0.4F_0.1

IMA Status:

Approved IMA 1983

Locality:

Bayan Obo Fe-Nb-REE deposits, Inner Mongolia, China. Link to MinDat.org Location Data.

Name Origin:

Named for a mountain, Daqingshan, near the Bayan Obo iron ore deposit.

Name Pronunciation:

Daqingshanite-(Ce) + Pronunciation

Synonym:

ICSD 76608

PDF 47-1814

Daqingshanite-(Ce) Image

Images:

Daqingshanite-(Ce)

Comments: B&W SEM image showing large grains of daqingshanite-(Ce) (light-grey) in carbonate matrix (dark-grey). Associated mineral is monazite-(Ce), which form small very bright grains, partialy replacing daqingshanite-(Ce).
Location: Nkumbwa Hill Carbonatite (Nkombwa Hill Carbonatite), Isoka, Isoka District, Muchinga Mts., Northern Province, Zambia. Scale: Scale Bar 500 µm.
© Pavel M. Kartashov

Daqingshanite-(Ce) Crystallography

Axial Ratios:

a:c = 1:0.91718

Cell Dimensions:

a = 10.058, c = 9.225, Z = 4; V = 808.20 Den(Calc)= 4.52

Crystal System:

Trigonal Space Group: R 3m, R 3m or R 32

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

By Intensity(I/I_o): 3.16(1), 2.52(0.7), 3.95(0.6),

Physical Properties of Daqingshanite-(Ce)

Cleavage:

{1011} Perfect

Color:

White, Light yellow.

Density:

3.81

Fracture:

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

Habit:

Rhombohedral Crystals - Occurs as well-formed crystals showing rhobohedral crystals.

Hardness:

5 - Apatite

Luminescence:

Non-fluorescent.

Luster:

Vitreous - Greasy

Streak:

white

Optical Properties of Daqingshanite-(Ce)

Dichroism (e):

none.

Dichroism (w):

none.

Gladstone-Dale:

CI meas= -0.053 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.112 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1457,KPDmeas= 0.1728,KC= 0.1641
Ncalc = 1.63 - 1.74

Optical Data:

Uniaxial (-), e=1.609, w=1.708, bire=0.0990.

Calculated Properties of Daqingshanite-(Ce)

Electron Density:

Bulk Density (Electron Density)=3.50 gm/cc
note: Specific Gravity of Daqingshanite-(Ce) =3.81 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_{Daqingshanite-(Ce)}= 170.01 barns/electron
U=PE_{Daqingshanite-(Ce)} x r_electron= 595.87 barns/cc.

Radioactivity:

GRapi = 24,935.84 (Gamma Ray American Petroleum Institute Units)
Concentration of Daqingshanite-(Ce) per GRapi unit = 40.10 (PPM)

Daqingshanite-(Ce) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

**Estimated Radioactivity from Daqingshanite-(Ce)** - weak
Specimen Size Weight/Volume (Sphere) *	Calculated Activity Bequerols (Bq)	Calculated Activity Curies (Ci)	Estimated Activity GR(api)	Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 7.94 cm	569,247	1.54E-05	24,935.84	8.20
100 gm / 3.69 cm	56,925	1.54E-06	2,493.58	0.82
10 gm / 1.71 cm	5,692	1.54E-07	249.36	0.08
1 gm / 7.94 mm	569	1.54E-08	24.94	0.01
0.1 gm / 3.69 mm	57	1.54E-09	2.49	0.00
0.01 gm / 1.71 mm	6	1.54E-10	0.25	0.00
0.001 gm / 0.79 mm	1	1.54E-11	0.02	0.00

Weight of pure Daqingshanite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.81 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
Estimated Thorium Activity ( 1.27 % Th) From Sum REE Elements (25.41 % REE)

Daqingshanite-(Ce) Classification

Dana Class:

17.01.10.01 (17)Compound Carbonates

(17.01)with miscellaneous formulae

(17.01.10)Dana Group

17.01.10.01 Daqingshanite-(Ce) (Sr,Ca,Ba)3(Ce,La)(PO4)(CO3)3-x(OH,F)x R 3m, R 3m or R 32 Trig

Strunz Class:

05.BF.15 05 - CARBONATES (NITRATES)

05.B - Carbonates with additional anions, without H2O

05.BF -With (Cl), SO4, PO4, TeO3

05.BF.15 Daqingshanite-(Ce) (Sr,Ca,Ba)3(Ce,La)(PO4)(CO3)3-x(OH,F)x R 3m, R 3m or R 32 Trig

Other Daqingshanite-(Ce) Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Daqingshanite-(Ce) :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

Search for Daqingshanite-(Ce) using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Daqingshanite-(Ce) :

Ask about Daqingshanite-(Ce) here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Daqingshanite-(Ce) Specimen Label here :

Daqingshanite-(Ce)

(Sr,Ca,Ba)3(Ce,La)(PO4)(CO3)3-x(OH,F)x
Dana No: 17.01.10.01 Strunz No: 05.BF.15
Locality:

Notes:

Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.