General Kivuite Information
|
Chemical Formula: |
(Th,Ca,Pb)H2(UO2)4(PO4)2(OH)8·7(H2O) |
Composition: |
Molecular Weight = 1,706.20 gm |
| |
Calcium 0.70 % Ca 0.99 % CaO |
| |
Thorium 8.16 % Th 9.29 % ThO2 |
| |
Uranium 55.80 % U 63.30 % UO2 |
| |
Phosphorus 3.63 % P 8.32 % P2O5 |
| |
Hydrogen 1.42 % H 12.67 % H2O |
| |
Lead 1.21 % Pb 1.31 % PbO |
| |
Oxygen 29.07 % O |
| |
______ ______ |
| |
100.00 % 95.87 % = TOTAL OXIDE |
Empirical Formula: |
Th0.6Ca0.3Pb0.1H2(UO2)4(PO4)2(OH)8·7(H2O) |
IMA Status: |
Discredited IMA 1962 |
Locality: |
Kobokobo pegmatite, Kivu, Zaire. Link to MinDat.org Location Data. |
Name Origin: |
Named in 1958 for the locality. |
| |
Kivuite Image |
Images:
|
|
Kivuite Crystallography
|
Axial Ratios: |
a:b:c =0.9211:1:0.7981 |
Cell Dimensions: |
a = 15.88, b = 17.24, c = 13.76, Z = 6; V = 3,767.09 Den(Calc)= 4.51 |
Crystal System: |
OrthorhombicSpace Group: Unk |
X Ray Diffraction: |
By Intensity(I/Io): 10.3(1), 7.96(0.9), 2.87(0.8),3.08(0.8), 3.86(0.6), 3.94(0.6), 4.43(0.6), 5.88(0.6), |
| |
Physical Properties of Kivuite
|
Color: |
Yellow. |
Habit: |
Aggregates - Made of numerous individual crystals or clusters. |
Habit: |
Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite). |
Habit: |
Platy - Sheet forms (e.g. micas). |
Hardness: |
2-3 - Gypsum-Calcite |
Luminescence: |
Non-fluorescent. |
Streak: |
light yellow |
| |
Optical Properties of Kivuite
|
Gladstone-Dale: |
CI calc= -0.011 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1424,KC= 0.1409 |
Optical Data: |
Biaxial (-), a=1.618, b=1.654, g=1.655, bire=0.0370, 2V(Calc)=18, 2V(Meas)=0-5. |
Pleochroism (x): |
colorless. |
Pleochroism (y): |
greenish yellow. |
Pleochroism (z): |
greenish yellow. |
| |
Calculated Properties of Kivuite
|
Electron Density: |
relectron=3.90 gm/cc note: rKivuite =4.51 gm/cc. |
Fermion Index |
Fermion Index = 0.00685 Boson Index = 0.99315 |
Photoelectric: |
PEKivuite =1,683.33 barns/electron U=PEKivuite x relectron=6,569.32 barns/cc. |
Radioactivity: |
GRapi = 4,266,547.61 (Gamma Ray American Petroleum Institute Units)
Kivuite 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)
7.13 ± 1.78 grams of pure Kivuite .
Estimated Maximum U.S. Postal Shipping Size
(10 mRem/hr limit, Unshielded 100 cm box)
712.91 ±178.23 grams of pure Kivuite .
Estimated Radioactivity from Kivuite - 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 / 7.51 cm |
103,543,377 |
2.80E-03 |
4,266,547.61 |
1,402.70 |
| 100 gm / 3.49 cm |
10,354,338 |
2.80E-04 |
426,654.76 |
140.27 |
| 10 gm / 1.62 cm |
1,035,434 |
2.80E-05 |
42,665.48 |
14.03 |
| 1 gm / 7.51 mm |
103,543 |
2.80E-06 |
4,266.55 |
1.40 |
| 0.1 gm / 3.49 mm |
10,354 |
2.80E-07 |
426.65 |
0.14 |
| 0.01 gm / 1.62 mm |
1,035 |
2.80E-08 |
42.67 |
0.01 |
| 0.001 gm / 0.75 mm |
104 |
2.80E-09 |
4.27 |
0.00 |
Weight of pure Kivuite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.51 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
|
| |
Kivuite Classification
|
Dana Class: |
42.4.9.3 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen |
| |
(42.4)where (AB)5 (XO4)2 Zq · x(H2O) |
| |
(42.4.9)Dana Group |
| |
42.4.9.1 Arsenuranylite Ca(UO2)4(AsO4)2(OH)4·6(H2O) Bmmb 2/m 2/m 2/m |
| |
42.4.9.2 Renardite Pb(UO2)4(PO4)2(OH)4·7(H2O) Bmmb 2/m 2/m 2/m |
| |
42.4.9.3 Kivuite ? (Th,Ca,Pb)H2(UO2)4(PO4)2(OH)8·7(H2O) Unk Ortho |
Strunz Class: |
VII/E.07-120 VII - Phosphates, Arsenates and Vanadates |
| |
VII/E - Uranylphosphates and uranylvanadates with [UO2]2+ - [PO4 | AsO4]3- and [UO2]2+ - [V2O8]6- |
| |
VII/E.07 - Phosphuranylite series |
| |
VII/E.07-10 Phuralumite Al2(UO2)3(PO4)2(OH)6·10(H2O) P 21/a 2/m |
| |
VII/E.07-20 Mundite Al(UO2)3(PO4)2(OH)3·5(H2O) P 21cn,Pmcn Ortho |
| |
VII/E.07-25 Yingjiangite (K2,Ca)(UO2)7(PO4)4(OH)6·6(H2O) Bmmb 2/m 2/m 2/m |
| |
VII/E.07-30 Phosphuranylite KCa(H3O)3(UO2)7(PO4)4O4·8(H2O) C mcm 2/m 2/m 2/m |
| |
VII/E.07-40 Phurcalite Ca2(UO2)3O2(PO4)2·7(H2O) P bca 2/m 2/m 2/m |
| |
VII/E.07-50 Arsenuranylite Ca(UO2)4(AsO4)2(OH)4·6(H2O) Bmmb 2/m 2/m 2/m |
| |
VII/E.07-60 Bergenite Ca2Ba4[(UO3)2O2(PO4)2]3(H2O)16 P 21/c 2/m |
| |
VII/E.07-70 Francoisite-(Nd) (Nd,Y,Sm,Ce)(UO2)3(PO4)2O(OH)·6(H2O) P 21/c 2/m |
| |
VII/E.07-80 Dewindtite Pb3[H(UO2)3O2(PO4)2]2·12(H2O) Bmmb 2/m 2/m 2/m |
| |
VII/E.07-90 Dumontite Pb2(UO2)3O2(PO4)2·5(H2O) P 21/m 2/m |
| |
VII/E.07-100 Hugelite Pb2(UO2)3(AsO4)2(OH)4·3(H2O) P 21/m 2/m |
| |
VII/E.07-110 Kamitugaite PbAl(UO2)5(PO4)2(OH)9·9.5(H2O) P1,P 1 Tri |
| |
VII/E.07-120 Kivuite (Th,Ca,Pb)H2(UO2)4(PO4)2(OH)8·7(H2O) Unk Ortho |
| |
VII/E.07-130 Althupite ThAl(UO2)7(PO4)4(OH)5·15(H2O) P1 1 |
| |
VII/E.07-140 Vanmeersscheite U(UO2)3(PO4)2(OH)6·4(H2O) P mn21 mm2 |
| |
VII/E.07-150 Metavanmeersscheite U(UO2)3(PO4)2(OH)6·2(H2O) F dd2 mm2 |
| |
Other Kivuite Information
|
References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) |
See Also: |
Links to other databases for Kivuite :
1 -Am. Min. Crystal Structure Database
2 -Athena
3 -Google Images
4 -Google Scholar
5 -MinDAT
6 -MinMax(Deutsch)
7 -MinMax(English)
8 -Mineralienatlas (Deutsch)
9 -QUT Mineral Atlas
10 - Uranium Minerals
Search for Kivuite using:
[ALTAVISTA]
[AOL]
[About.com]
[All-The-Web]
[HotBot]
[Ixquick]
[LookSmart]
[MAMMA]
[MSN.COM]
[Netscape]
[Teoma]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Kivuite :
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 Kivuite Mineral Data :
Ask about Kivuite 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 Kivuite Specimen Label here :
|
Kivuite
(Th,Ca,Pb)H2(UO2)4(PO4)2(OH)8·7(H2O)
Dana No: 42.4.9.3 Strunz No: VII/E.07-120
Locality:
Notes:
|
|
| |
| |
|
| |