Plumboagardite Mineral Data

Advertisment

Weinrich Minerals, A Dealer in Fine Mineral Specimens - Since 1989. We buy collections and single high quality specimens.

A Bijoux.com is an online store specialized in the sale on the internet of precious stones , gems , minerals and jewels for individuals and professionals

John Betts - Fine Minerals, New York. Dealers of Fine Minerals and Natural Crystal Clusters since 1989. We buy rock collections, we buy gem collections, we buy mineral collections.

General Plumboagardite Information

Chemical Formula:

(Pb,REE,Ca)Cu6(AsO4)3(OH)6•3(H2O)

Composition:

Molecular Weight = 1,097.39 gm

Calcium 1.02 % Ca 1.43 % CaO

Lanthanum 1.65 % La 1.93 % La₂O₃

Cerium 0.77 % Ce 0.90 % Ce₂O₃

Praeseodymium 0.13 % Pr 0.15 % Pr₂O₃

Samarium 0.14 % Sm 0.16 % Sm₂O₃

Gadolinium 0.14 % Gd 0.17 % Gd₂O₃

Dysprosium 0.15 % Dy 0.17 % Dy₂O₃

Yttrium 0.73 % Y 0.93 % Y₂O₃

Iron 1.07 % Fe 1.53 % Fe₂O₃

Copper 32.37 % Cu 40.52 % CuO

Silicon 0.69 % Si 1.48 % SiO₂

Arsenic 19.39 % As 29.74 % As₂O₅

Phosphorus 0.14 % P 0.32 % P₂O₅

Hydrogen 1.16 % H 10.39 % H₂O

Lead 8.31 % Pb 8.95 % PbO

Neodymium 1.05 % Nd 1.23 % Nd₂O₃

Oxygen 31.10 % O

______ ______

100.00 % 99.99 % = TOTAL OXIDE

Empirical Formula:

Pb_0.44La_0.13Nd_0.08Ce_0.06Pr_0.01Sm_0.01Gd_0.01Dy_0.01Y_0.09Ca_0.28Cu_5.59Fe³⁺_0.21As_2.84Si_0.27 P_0.05O₁₂(OH)₆·3.33(H₂O)

Environment:

Formed in an oxidized zone, the product of alteration of primary Pb, Cu, REE, and As minerals such as chalcopyrite, fluorite, fahlore, and galena. Mixite group.

IMA Status:

Approved IMA 2004 (Dana # Added)

Locality:

Found in an abandoned mine, Aitern-Süd, near Schönau in the Southern Black Forest, Germany. Link to MinDat.org Location Data.

Name Origin:

Named as Pb (plumbo) analogue of agardite.

Synonym:

IMA2003-031a

Search for Plumboagardite 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.

Plumboagardite Crystallography

Axial Ratios:

a:c = 1:0.43137

Cell Dimensions:

a = 13.77, c = 5.94, Z = 2; V = 975.41 Den(Calc)= 3.74

Crystal System:

Hexagonal - DipyramidalH-M Symbol (6/m) Space Group: P 6₃/m

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

By Intensity(I/I_o): 12.01(1), 3.6(0.8), 2.49(0.7),2.98(0.6), 4.51(0.6), 1.817(0.5), 2.61(0.5), 2.74(0.5), 3.31(0.5),

Physical Properties of Plumboagardite

Cleavage:

None

Color:

Grass green.

Diaphaneity:

Translucent

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Habit:

Spherical - Spherical, rounded aggregates.

Hardness:

3 - Calcite

Luster:

Vitreous (Glassy)

Streak:

greenish

Optical Properties of Plumboagardite

Gladstone-Dale:

CI calc= -0.112 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2047,KC= 0.184
Ncalc = 1.69

Optical Data:

Uniaxial (+), w=1.726, e=1.805, bire=0.0790.

Calculated Properties of Plumboagardite

Electron Density:

Bulk Density (Electron Density)=3.49 gm/cc
note: Specific Gravity of Plumboagardite =3.74 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_{Plumboagardite}= 186.95 barns/electron
U=PE_{Plumboagardite} x r_electron= 653.09 barns/cc.

Radioactivity:

GRapi = 4,012.86 (Gamma Ray American Petroleum Institute Units)
Concentration of Plumboagardite per GRapi unit = 249.20 (PPM)

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

**Estimated Radioactivity from Plumboagardite** - mild
Specimen Size Weight/Volume (Sphere) *	Calculated Activity Becquerels (Bq)	Calculated Activity Curies (Ci)	Estimated Activity GR(api)	Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 7.99 cm	90,220	2.44E-06	4,012.86	1.32
100 gm / 3.71 cm	9,022	2.44E-07	401.29	0.13
10 gm / 1.72 cm	902	2.44E-08	40.13	0.01
1 gm / 7.99 mm	90	2.44E-09	4.01	0.00
0.1 gm / 3.71 mm	9	2.44E-10	0.40	0.00
0.01 gm / 1.72 mm	1	2.44E-11	0.04	0.00
0.001 gm / 0.80 mm	0	2.44E-12	0.00	0.00

Weight of pure Plumboagardite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.74 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
Estimated Thorium Activity ( 0.20 % Th) From Sum REE Elements ( 4.02 % REE)

Plumboagardite Classification

Dana Class:

42.05.01.06 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.05)where (A)2 (XO4) Zq · x(H2O)

(42.05.01)Mixite group (Arsenate Series)

42.05.01.01 Mixite BiCu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

42.05.01.02 Agardite-(Y) (Y,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

42.05.01.02a Agardite-(La)! (La,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

42.05.01.02b Agardite-(Nd)! (Pb,Nd,Y,La,Ca)Cu6(AsO4)3(OH)6•3(H2O) 6/m

42.05.01.02c Agardite-(Dy)! (Dy,La,Ca)Cu6(AsO4)3(OH)6•3(H2O) 6/m

42.05.01.02d Agardite-(Ca)! CaCu6(AsO4)3(OH)6•3(H2O) 6/m

42.05.01.02e Agardite-(Ce)! (Ce,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

42.05.01.03 Goudeyite (Al,Y)Cu6(AsO4)3(OH)6•3(H2O) Unk Hex

42.05.01.04 Zalesiite! (Ca,Y)Cu6[(AsO4)2(AsO3OH)(OH)6]•3(H2O) P 6₃/m 6/m

42.05.01.06 Plumboagardite! (Pb,REE,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

Strunz Class:

08.DL.15 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

08.DL -With large and medium-sized cations, (OH, etc.):RO4 = 2:1

08.DL.15 Agardite-(Dy)! (Dy,La,Ca)Cu6(AsO4)3(OH)6•3(H2O) 6/m

08.DL.15 Agardite-(Ca)! CaCu6(AsO4)3(OH)6•3(H2O) 6/m

08.DL.15 Agardite-(Ce)! (Ce,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

08.DL.15 Agardite-(La)! (La,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

08.DL.15 Agardite-(Nd)! (Pb,Nd,Y,La,Ca)Cu6(AsO4)3(OH)6•3(H2O) 6/m

08.DL.15 Agardite-(Y) (Y,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

08.DL.15 Goudeyite (Al,Y)Cu6(AsO4)3(OH)6•3(H2O) Unk Hex

08.DL.15 Zalesiite! (Ca,Y)Cu6[(AsO4)2(AsO3OH)(OH)6]•3(H2O) P 6₃/m 6/m

08.DL.15 Mixite BiCu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

08.DL.15 Petersite-(Y) (Y,Ce,Nd,Ca)Cu6(PO4)3(OH)6•3(H2O) P 6₃/m 6/m

08.DL.15 Calciopetersite! CaCu6[(PO4)2(PO3OH)(OH)6]•3(H2O) P 6₃/m 6/m

08.DL.15 Plumboagardite! (Pb,REE,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

Other Plumboagardite Information

References:

NAME( AmMin, v91, p713) PHYS. PROP.(AmMin, v91, p713) OPTIC PROP.(AmMin, v91, p713)

See Also:

Links to other databases for Plumboagardite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

Search for Plumboagardite using:

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

Visit our Advertisers for Plumboagardite :

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

Ask about Plumboagardite 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 Plumboagardite Specimen Label here :

Plumboagardite

(Pb,REE,Ca)Cu6(AsO4)3(OH)6•3(H2O)
Dana No: 42.05.01.06 Strunz No: 08.DL.15
Locality:

Notes: