Sayrite Mineral Data

[About Us] [Products] [Fluorescent Mineals] [Contact Us]
UVTools is a supplier of affordable ultraviolet lamps and fluorescent minerals
Our customers include mineral dealers, gift shops, and museums worldwide
We provide an array of shortwave, midwave, and longwave lamps at the best price!

General Sayrite Information

Chemical Formula:

Pb2(UO2)5O6(OH)2•4(H2O)

Composition:

Molecular Weight = 1,966.61 gm

Uranium 60.52 % U 68.65 % UO₂

Hydrogen 0.51 % H 4.58 % H₂O

Lead 21.07 % Pb 22.70 % PbO

Oxygen 17.90 % O

______ ______

100.00 % 95.93 % = TOTAL OXIDE

Empirical Formula:

Pb₂(UO₂)₅O₆(OH)₂•4(H₂O)

Environment:

Alteration product of uraninite in the oxidized zone of a uranium orebody.

IMA Status:

Approved IMA 1983

Locality:

Shinkolobwe, Katanga Province, Congo (Shaba Province, Zaire). Link to MinDat.org Location Data.

Name Origin:

Named for David Sayre (1924- ), American crystallographer, State University of New York, Stony Brook, New York, USA.

Name Pronunciation:

Sayrite

Synonym:

ICSD 38374

PDF 35-601

Search for Sayrite 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.

Sayrite Crystallography

Axial Ratios:

a:b:c =1.5379:1:2.088

Cell Dimensions:

a = 10.704, b = 6.96, c = 14.533, Z = 2; beta = 116.81° V = 966.32 Den(Calc)= 6.76

Crystal System:

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

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

By Intensity(I/I_o): 3.113(1), 3.512(0.9), 7.01(0.8),

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

Piret P , Deliens M , Piret-Meunier J , Germain G , Bulletin de Mineralogie , 106 (1983) p.299-304

Physical Properties of Sayrite

Cleavage:

{102} Distinct

Color:

Yellow orange, Red orange.

Density:

6.76

Optical Properties of Sayrite

Gladstone-Dale:

CI meas= -0.222 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.222 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1398,KPDmeas= 0.1398,KC= 0.1144
Ncalc = 1.77

Optical Data:

Biaxial (-), b=1.94, g=1.95,

Calculated Properties of Sayrite

Electron Density:

Bulk Density (Electron Density)=5.57 gm/cc
note: Specific Gravity of Sayrite =6.76 gm/cc.

Fermion Index:

Fermion Index = 0.05
Boson Index = 0.95

Photoelectric:

PE_Sayrite=2,059.44 barns/electron
U=PE_Sayrite x r_electron=11468.10 barns/cc.

Radioactivity:

GRapi = 4,249,243.79 (Gamma Ray American Petroleum Institute Units)
Concentration of Sayrite per GRapi unit = 235.34 (PPB)

Sayrite 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) 7.16 ± 1.79 grams of pure Sayrite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 715.81 ±178.95 grams of pure Sayrite .

**Estimated Radioactivity from Sayrite** - 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 / 6.56 cm	108,326,404	2.93E-03	4,249,243.79	1,397.01
100 gm / 3.05 cm	10,832,640	2.93E-04	424,924.38	139.70
10 gm / 1.41 cm	1,083,264	2.93E-05	42,492.44	13.97
1 gm / 6.56 mm	108,326	2.93E-06	4,249.24	1.40
0.1 gm / 3.05 mm	10,833	2.93E-07	424.92	0.14
0.01 gm / 1.41 mm	1,083	2.93E-08	42.49	0.01
0.001 gm / 0.66 mm	108	2.93E-09	4.25	0.00

Weight of pure Sayrite in grams (gm) and Calculated Diameter of a Sphere with a Density of 6.76 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

Sayrite Classification

Dana Class:

05.09.06.01 (05)Oxides Containing Uranium and Thorium

(05.09)with a cation charge of 6+ containing Pb or Bi and some water of hydration or hydroxyl

(05.09.06)Dana Group

05.09.06.01 Sayrite Pb2(UO2)5O6(OH)2•4(H2O) P 2₁/c 2/m

Strunz Class:

04.GB.50 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.G - Uranyl Hydroxides

04.GB -With additional cations (K, Ca, Ba, Pb, etc.); with mainly UO2(O,OH)5 pentagonal polyhedra

04.GB.50 Sayrite Pb2(UO2)5O6(OH)2•4(H2O) P 2₁/c 2/m

Other Sayrite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Sayrite :
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
15 - Uranium Minerals
16 - WWW-MINCRYST

Search for Sayrite using:

[ALTAVISTA] [AOL] [bing] [GeoScienceWorld] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Sayrite :

B & L Fine Minerals

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

John Betts Fine Minerals

Lapis Mineral Journal

Mineral News

UV Tools

Wrights Rock Shop

Translate Sayrite Mineral Data :

Ask about Sayrite 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 Sayrite Specimen Label here :

Sayrite

Pb2(UO2)5O6(OH)2•4(H2O)
Dana No: 05.09.06.01 Strunz No: 04.GB.50
Locality:

Notes: