Metakirchheimerite Mineral Data

Metakirchheimerite Mineral Data +

[Mineral Specimens] [Mineral Locations] [About Us] [Search] [Register]
Greenside Minerals
Newest website on the Internet for top quality, affordable minerals from around the World
We specialize in minerals from the UK and Ireland

General Metakirchheimerite Information

Chemical Formula:

Co(UO2)2(AsO4)2·8(H2O)

Composition:

Molecular Weight = 1,020.95 gm

Uranium 46.63 % U 52.90 % UO₂

Cobalt 5.77 % Co 8.12 % Co₂O₃

Arsenic 14.68 % As 22.51 % As₂O₅

Hydrogen 1.58 % H 14.12 % H₂O

Oxygen 31.34 % O

______ ______

100.00 % 97.65 % = TOTAL OXIDE

Empirical Formula:

Co(UO₂)₂(AsO₄)₂·8(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1958

Locality:

Link to MinDat.org Location Data.

Search for Metakirchheimerite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Metakirchheimerite Crystallography

Axial Ratios:

a:c = 1:1.19498

Cell Dimensions:

a = 7.18, c = 8.58, Z = 1; V = 442.32 Den(Calc)= 3.83

Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: P 4/mmm

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

By Intensity(I/I_o): 3.56(1), 8.55(1), 5.07(0.6),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Locock A J , Burns P C , Flynn M , The Canadian Mineralogist , 42 (2004) p.1699-1718, Divalent transition metals and magnesium in structures, that contain the autunite-type sheet, Sample: CoUAs8

Physical Properties of Metakirchheimerite

Cleavage:

[001] Perfect

Color:

Light pink.

Density:

3.2 - 3.25, Average = 3.22

Diaphaniety:

Transparent to Translucent

Hardness:

2-2.5 - Gypsum-Finger Nail

Luster:

Pearly

Streak:

white

Optical Properties of Metakirchheimerite

Gladstone-Dale:

CI meas= -0.191 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.003 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1646,KPDmeas= 0.1955,KC= 0.1641

Optical Data:

Uniaxial (-), e=1.617, w=1.644, bire=0.0270.

Calculated Properties of Metakirchheimerite

Electron Density:

r_electron=3.40 gm/cc
note: r_{Metakirchheimerite}=3.83 gm/cc.

Fermion Index

Fermion Index = 0.00351
Boson Index = 0.99649

Photoelectric:

PE_{Metakirchheimerite}=1,205.00 barns/electron
U=PE_{Metakirchheimerite} x r_electron=4,095.52 barns/cc.

Radioactivity:

GRapi = 3,527,062.36 (Gamma Ray American Petroleum Institute Units)

Metakirchheimerite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 8.62 ± 2.16 grams of pure Metakirchheimerite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 862.38 ±215.59 grams of pure Metakirchheimerite .

**Estimated Radioactivity from Metakirchheimerite** - very strong
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 / 7.93 cm	83,465,785	2.26E-03	3,527,062.36	1,159.58
100 gm / 3.68 cm	8,346,579	2.26E-04	352,706.24	115.96
10 gm / 1.71 cm	834,658	2.26E-05	35,270.62	11.60
1 gm / 7.93 mm	83,466	2.26E-06	3,527.06	1.16
0.1 gm / 3.68 mm	8,347	2.26E-07	352.71	0.12
0.01 gm / 1.71 mm	835	2.26E-08	35.27	0.01
0.001 gm / 0.79 mm	83	2.26E-09	3.53	0.00

Weight of pure Metakirchheimerite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.83 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

Metakirchheimerite Classification

Dana Class:

40.2a.17.1 (40)Hydrated Phosphates, etc

(40.2a)where A++ (B++)2 (XO4) · x(H2O), containing (UO2)++

(40.2a.17)Dana Group

40.2a.17.1 Metakirchheimerite Co(UO2)2(AsO4)2·8(H2O) P 4/mmm 4/m 2/m 2/m

Strunz Class:

VII/E.02-50 VII - Phosphates, Arsenates and Vanadates

VII/E - Uranylphosphates and uranylvanadates with [UO2]2+ - [PO4 | AsO4]3- and [UO2]2+ - [V2O8]6-

VII/E.02 - Meta-autunite group

VII/E.02-10 Metanovacekite Mg(UO2)2(AsO4)2·4-8(H2O) P 4/n 4/m

VII/E.02-20 Bassetite Fe(UO2)2(PO4)2·8(H2O) P 2₁/m 2/m

VII/E.02-30 Metakahlerite Fe(UO2)2(AsO4)2·8(H2O) P 4/mmm 4/m 2/m 2/m

VII/E.02-40 Lehnerite Mn[UO2/PO4]2·8(H2O) P 2₁/n 2/m

VII/E.02-50 Metakirchheimerite Co(UO2)2(AsO4)2·8(H2O) P 4/mmm 4/m 2/m 2/m

VII/E.02-60 Metatorbernite Cu(UO2)2(PO4)2·8(H2O) P 4/n 4/m

VII/E.02-70 Metazeunerite Cu(UO2)2(AsO4)2·8(H2O) P 4/n 4/m

VII/E.02-80 Metalodevite Zn(UO2)2(AsO4)2·10(H2O) P 4₁/m 4/m

VII/E.02-90 Meta-autunite Ca(UO2)2(PO4)2·2-6(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-95 Sodium meta-autunite! Na2(UO2)2(PO4)2·6-8(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-100 Meta-uranospinite Ca(UO2)2(AsO4)2·8(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-110 Meta-uranocircite Ba(UO2)2(PO4)2·6-8(H2O) P 2₁ 2

VII/E.02-120 Metaheinrichite Ba(UO2)2(AsO4)2·8(H2O) P 4₁/? 4/m

VII/E.02-130 Sodium-uranospinite (Na2,Ca)(UO2)2(AsO4)2·5(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-140 Meta-ankoleite K2(UO2)2(PO4)2·6(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-150 Abernathyite K(UO2)(AsO4)·4(H2O) P 4/ncc 4/m 2/m 2/m

VII/E.02-160 Uramphite (NH4)(UO2)(PO4)·3(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-170 Chernikovite (H3O)2(UO2)2(PO4)2·6(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-180 Pseudo-autunite* (H3O)4Ca2(UO2)2(PO4)4·5(H2O)(?) Unk Ortho

VII/E.02-190 Ulrichite CaCu(UO2)(PO4)2·4(H2O) C 2/m 2/m

Other Metakirchheimerite Information

References:

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

See Also:

Links to other databases for Metakirchheimerite :
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

Search for Metakirchheimerite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Metakirchheimerite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Metakirchheimerite Mineral Data :

Ask about Metakirchheimerite 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 Metakirchheimerite Specimen Label here :

Metakirchheimerite

Co(UO2)2(AsO4)2·8(H2O)
Dana No: 40.2a.17.1 Strunz No: VII/E.02-50
Locality:

Notes: