Bayleyite Mineral Data (original) (raw)

General Bayleyite Information

Help on Chemical Formula: Chemical Formula:

Mg2(UO2)(CO3)3•18(H2O)

Help on Composition: Composition:

Molecular Weight = 822.94 gm

Magnesium 5.91 % Mg 9.80 % MgO

Uranium 28.92 % U 32.81 % UO2

Hydrogen 4.41 % H 39.40 % H2O

Carbon 4.38 % C 16.04 % CO2

Oxygen 56.38 % O

______ ______

100.00 % 98.06 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Mg2(UO2)(CO3)3•18(H2O)

Help on Environment: Environment:

Coating or efflorescence with other secondary uranium minerals

Help on IMA Status: IMA Status:

Valid Species (Pre-IMA) 1948

Help on Locality: Locality:

Hillside mine, about 5.5 km north of Bagdad, Eureka district, Yavapai Co., Arizona, USA. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for William Shirley Bayley (1861-1943), American mineralogist and geologist, University of Illinois, Urbana, Illinois, USA

Help on Name Pronunciation: Name Pronunciation:

Bayleyite + Pronunciation Say BAYLEYITE

Help on Synonym: Synonym:

ICSD 32-101

PDF 4-130

Bayleyite Image

Click Here for Larger Bayleyite Image in a New Browser Window Images:

Click Here for Larger Bayleyite Image Bayleyite Comments: Stellate aggregates of pale greenish white, acicular bayleyite crystals on a gossanous matrix with white, snowy aragonite. Location: Hideout #1 mine, White Canyon district, San Juan County, Utah, USA.Scale: Picture size 3.5 mm. © Paul M. Schumacher

Click Here for Larger Bayleyite Image in a New Browser Window Images:

Click Here for Larger Bayleyite Image in a New Browser Window Images:

Click Here for Larger Bayleyite Image Bayleyite Comments: Stellate aggregates of acicular bayleyite crystals under short wave UV light showing pale green fluorescence. Location: Hideout #1 mine, White Canyon district, San Juan County, Utah, USA.Scale: Picture size 3.5 mm. © Paul M. Schumacher

Bayleyite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =1.7406:1:0.4265

Help on Cell Dimensions: Cell Dimensions:

a = 26.65, b = 15.31, c = 6.53, Z = 4; beta = 93.066° V = 2,660.50 Den(Calc)= 2.05

Help on Crystal System: Crystal System:

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

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 7.66(1), 13.1(0.9), 3.83(0.6),

Click Here for Large Bayleyite Structure Window 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

| | Mayer H , Mereiter K , Tschermaks Mineralogische und Petrographische Mitteilungen , 35 (1986) p.133-146, Synthetic bayleyite, Mg2[UO2(CO3)3]*18H2O: Thermochemistry, crystallography, and crystal structure, Locality: synthetic | | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Bayleyite

Help on Cleavage: Cleavage:

None

Help on Color: Color:

Yellow, Pale yellow, Yellowish white.

Help on Density: Density:

2.05

Help on Diaphaneity: Diaphaneity:

Transparent

Help on Fracture: Fracture:

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

Help on Luminescence: Luminescence:

Fluorescent, Short UV=yellow, Long UV=yellow.

Help on Luster: Luster:

Vitreous - Dull

Help on Streak: Streak:

white

Optical Properties of Bayleyite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= -0.067 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.067 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.235,KPDmeas= 0.235,KC= 0.2202
Ncalc = 1.45

Help on Optical Data: Optical Data:

Biaxial (-), a=1.453-1.455, b=1.49-1.492, g=1.498-1.502, bire=0.0450-0.0470

Help on Pleochroism (x): Pleochroism (x):

colorless.

Help on Pleochroism (y): Pleochroism (y):

colorless.

Help on Pleochroism (z): Pleochroism (z):

colorless.

Calculated Properties of Bayleyite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=2.00 gm/cc
note: Specific Gravity of Bayleyite =2.05 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.0087482959
Boson Index = 0.9912517041

Help on Photoelectric: Photoelectric:

PEBayleyite = 672.02 barns/electron
U=PEBayleyite x relectron=1,345.94 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 2,408,700.33 (Gamma Ray American Petroleum Institute Units)
Concentration of Bayleyite per GRapi unit = 415.16 (PPB)

Bayleyite 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) 12.63 ± 3.16 grams of pure Bayleyite .
Estimated Maximum U.S. Postal Shipping Size(10 mRem/hr limit, Unshielded 100 cm box) 1262.8 ±315.70 grams of pure Bayleyite .

Estimated Radioactivity from Bayleyite - very strong

SpecimenSizeWeight/Volume(Sphere) * CalculatedActivityBecquerels(Bq) CalculatedActivityCuries (Ci) EstimatedActivityGR(api) EstimatedExposure(mRem**)/hrIf Held in HandFor One Hour
1000 gm / 9.77 cm 51,774,316 1.40E-03 2,408,700.33 791.90
100 gm / 4.53 cm 5,177,432 1.40E-04 240,870.03 79.19
10 gm / 2.10 cm 517,743 1.40E-05 24,087.00 7.92
1 gm / 9.77 mm 51,774 1.40E-06 2,408.70 0.79
0.1 gm / 4.53 mm 5,177 1.40E-07 240.87 0.08
0.01 gm / 2.10 mm 518 1.40E-08 24.09 0.01
0.001 gm / 0.98 mm 52 1.40E-09 2.41 0.00

Weight of pure Bayleyite in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.05 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

Bayleyite Classification

Help on Dana Class: Dana Class:

15.03.03.01 (15)Hydrated Carbonates

(15.03)where A+m B++n (XO3)p � x(H2O), (m+n):p = 1:1 and containing U, Th, Zr, Y

(15.03.03)Dana Group

15.03.03.01 Bayleyite Mg2(UO2)(CO3)3•18(H2O) P 21/a 2/m

15.03.03.02 Swartzite CaMg(UO2)(CO3)3•12(H2O) P 21/m 2/m

Help on Strunz Class: Strunz Class:

05.ED.05 05 - CARBONATES (NITRATES)

05.E - Uranyl Carbonates

05.ED -UO2:CO3 = 1:3

05.ED.05 Bayleyite Mg2(UO2)(CO3)3•18(H2O) P 21/a 2/m

Other Bayleyite Information

Help on References: References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990;Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

Help on See Also: See Also:

Links to other databases for Bayleyite :
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 Bayleyite using:

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

Visit our Advertisers for Bayleyite :

A Bijoux Google Search for Bayleyite
Adam's Minerals Google Search for Bayleyite
Cape Minerals Google Search for Bayleyite
Dakota Matrix Minerals Google Search for Bayleyite
Excalibur Mineral Corp. Google Search for Bayleyite
Exceptional Minerals Google Search for Bayleyite
John Betts Fine Minerals Search for Bayleyite
McDougall Minerals Google Search for Bayleyite
Mineral News Website Link
Rock and Mineral Shows Google Search for Bayleyite
Weinrich Minerals, Inc. Google Search for Bayleyite

Ask about Bayleyite 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 Espa�ol

Print or Cut-and-Paste your Bayleyite Specimen Label here :

Bayleyite

Mg2(UO2)(CO3)3•18(H2O)
Dana No: 15.03.03.01 Strunz No: 05.ED.05
Locality:

Notes: