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Coconinoite Mineral Data

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General Coconinoite Information

Help on Chemical  Formula: Chemical Formula: Fe+++2Al2(UO2)2(PO4)4(SO4)(OH)2•18(H2O)
Help on Composition: Composition: Molecular Weight = 1,539.95 gm
   Uranium     30.91 %  U    35.07 % UO2
   Aluminum     3.50 %  Al    6.62 % Al2O3
   Iron         7.25 %  Fe   10.37 % Fe2O3
   Phosphorus   8.05 %  P    18.43 % P2O5
   Hydrogen     2.49 %  H    22.23 % H2O
   Sulfur       2.08 %  S     5.20 % SO3
   Oxygen      45.71 %  O
              ______        ______ 
              100.00 %       97.92 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe3+2Al2(UO2)2(PO4)4(SO4)(OH)2•18(H2O)
Help on IMA Status: IMA Status: Approved IMA 1966
Help on Locality: Locality: Sun Valley mine, Coconino County, Arizona, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its locality.
 

Coconinoite Image

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  Coconinoite

Comments: Dull, putty-colored clay-like mass of coconinoite on a sandstone matrix.
Location: Jomas mine, White Canyon, San Juan County, Utah, USA. Scale: Picture size 1.2 cm.
© Paul M. Schumacher

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  Coconinoite

Comments: Pale yellow coatings of coconinoite on sandstone.
Location: Jomac Mine, White Canyon, San Juan County, Utah. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Coconinoite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9637:1:1.7733
Help on Cell Dimensions: Cell Dimensions: a = 12.5, b = 12.97, c = 23, Z = 4; beta = 106.6° V = 3,573.47 Den(Calc)= 2.86
Help on Crystal System: Crystal System: Monoclinic Space Group: C 2/c,Cc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 11.1(1), 3.29(0.8), 3.74(0.8),
 

Physical Properties of Coconinoite

Help on Color: Color: Yellow, Cream yellow, Light yellow.
Help on Density: Density: 2.7
Help on Habit: Habit: Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape.
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 1-2 - Between Talc and Gypsum
Help on Streak: Streak: white
 

Optical Properties of Coconinoite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.067 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.007 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2014,KPDmeas= 0.2133,KC= 0.2
Ncalc = 1.54 - 1.57
Help on Optical Data: Optical Data: Biaxial (-), a=1.55, b=1.588, g=1.59, bire=0.0400, 2V(Calc)=24, 2V(Meas)=40.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): pale yellow.
Help on Pleochroism (z): Pleochroism (z): pale yellow.
 

Calculated Properties of Coconinoite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.70 gm/cc
note: Specific Gravity of Coconinoite =2.86 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0041427783
Boson Index = 0.9958572217
Help on Photoelectric: Photoelectric: PECoconinoite = 744.75 barns/electron
U=PECoconinoite x relectron=2,013.88 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 2,491,385.06 (Gamma Ray American Petroleum Institute Units)
Concentration of Coconinoite per GRapi unit = 401.38 (PPB)

Coconinoite 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) 12.21 ± 3.05 grams of pure Coconinoite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 1220.9 ±305.22 grams of pure Coconinoite .

Estimated Radioactivity from Coconinoite - 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 / 8.74 cm 55,335,743 1.50E-03 2,491,385.06 819.09
100 gm / 4.06 cm 5,533,574 1.50E-04 249,138.51 81.91
10 gm / 1.88 cm 553,357 1.50E-05 24,913.85 8.19
1 gm / 8.74 mm 55,336 1.50E-06 2,491.39 0.82
0.1 gm / 4.06 mm 5,534 1.50E-07 249.14 0.08
0.01 gm / 1.88 mm 553 1.50E-08 24.91 0.01
0.001 gm / 0.87 mm 55 1.50E-09 2.49 0.00

Weight of pure Coconinoite in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.86 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
 

Coconinoite Classification

Help on  Dana Class: Dana Class: 43.05.05.01 (43)Compound Phosphates, etc.
  (43.05)(Hydrated Compound Anions With Hydroxyl or Halogen)
  (43.05.05)Dana Group
 
43.05.05.01 Coconinoite Fe2Al2(UO2)2(PO4)4(SO4)(OH)2•18(H2O) C 2/c,Cc Mono
Help on  Strunz Class: Strunz Class: 08.EB.35 08 - PHOSPHATES, ARSENATES, VANADATES
  08.E - Uranyl Phosphates and Arsenates
  08.EB -UO2:RO4 = 1:1
 
08.EB.35 Coconinoite Fe2Al2(UO2)2(PO4)4(SO4)(OH)2•18(H2O) C 2/c,Cc Mono
 

Other Coconinoite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Coconinoite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - Uranium Minerals

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

Coconinoite

Fe+++2Al2(UO2)2(PO4)4(SO4)(OH)2•18(H2O)
Dana No: 43.05.05.01 Strunz No: 08.EB.35
Locality:

 

Notes:

 

 
   
 


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