Gutsevichite Mineral Data

General Gutsevichite Information

Chemical Formula:

Al3(PO4)2(OH)3•8(H2O)

Composition:

Molecular Weight = 466.03 gm

Aluminum 17.37 % Al 32.82 % Al₂O₃

Phosphorus 13.29 % P 30.46 % P₂O₅

Hydrogen 4.11 % H 36.72 % H₂O

Oxygen 65.23 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Al₃(PO₄)₂(OH)₃•8(H₂O)

Environment:

In cavities in oxidized V-bearing shales. Discredited as being incompletly characterized.

IMA Status:

Discredited IMA 1962

Locality:

NW Kazakhstan. Link to MinDat.org Location Data.

Name Origin:

Named in 1959 for V. P. Gutsevich, geologist in Kazakhstan.

Gutsevichite Image

Images:

Gutsevichite

Comments: White efflorescence of gutsevichite on sandstone.
Location: Long Park, Uravan, Montrose County, Colorado, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Gutsevichite Crystallography

Crystal System:

Isometric Space Group: Unk

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

By Intensity(I/I_o): 4.08(1), 2.51(0.9), 1.82(0.8),1.45(0.7), 3.51(0.5),

Physical Properties of Gutsevichite

Color:

Greenish brown, Yellow green, Dark brown.

Density:

1.9 - 2, Average = 1.95

Diaphaneity:

Translucent

Habit:

Concretionary - Rounded massive fine-grained materials.

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Hardness:

2.5 - Finger Nail

Luster:

Waxy

Streak:

white

Optical Properties of Gutsevichite

Gladstone-Dale:

CI meas= -0.197 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.2974,KC= 0.2485
Ncalc = 1.47 - 1.5

Optical Data:

Isotropic, n=1.56-1.6.

Calculated Properties of Gutsevichite

Electron Density:

Bulk Density (Electron Density)=2.01 gm/cc
note: Specific Gravity of Gutsevichite =1.95 gm/cc.

Fermion Index:

Fermion Index = 0.0003192641
Boson Index = 0.9996807359

Photoelectric:

PE_Gutsevichite= 1.23 barns/electron
U=PE_Gutsevichite x rElectron Density= 2.48 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Gutsevichite is Not Radioactive

Gutsevichite Classification

Dana Class:

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

(42.10)where (AB)3 (XO4)2 Zq ï¿½ x(H2O)

(42.10.04)Dana Group

42.10.04.01 Gutsevichite? Al3(PO4)2(OH)3•8(H2O) Unk Cubic

Strunz Class:

08.DM.25 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

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

08.DM.25 Gutsevichite? Al3(PO4)2(OH)3•8(H2O) Unk Cubic

08.DM.25 Yukonite Ca7Fe11(AsO4)9O10•24.3(H2O) None

Other Gutsevichite Information

References:

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

See Also:

Links to other databases for Gutsevichite :
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 Gutsevichite using:

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

Visit our Advertisers for Gutsevichite :

Ask about Gutsevichite 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 Gutsevichite Specimen Label here :

Gutsevichite

Al3(PO4)2(OH)3•8(H2O)
Dana No: 42.10.04.01 Strunz No: 08.DM.25
Locality:

Notes:

Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.