Goedkenite Mineral Data

Advertisment

Your premier supplier of quality mineral specimens from Southern Africa and the world at large

Adamsminerals.com- Online mineral store front for mineral collectors

For more than thirty (30) years, Excalibur Mineral Corp. has been providing private collectors, researchers, major universities and museums throughout the world with reliably identified, rare and unusual mineral samples for science an

McDougall Minerals sells high-quality mineral specimens from all over the world to collectors of all levels, from beginners to connoisseurs

General Goedkenite Information

Chemical Formula:

(Sr,Ca)2Al(PO4)2(OH)

Composition:

Molecular Weight = 385.40 gm

Strontium 34.10 % Sr 40.33 % SrO

Calcium 5.20 % Ca 7.28 % CaO

Aluminum 7.00 % Al 13.23 % Al₂O₃

Phosphorus 16.07 % P 36.83 % P₂O₅

Hydrogen 0.26 % H 2.34 % H₂O

Oxygen 37.36 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Sr_1.5Ca_0.5Al(PO₄)₂(OH)

IMA Status:

Approved IMA 1975

Locality:

Palermo pegmatite, North Groton, Grafton County, New Hampshire, USA Link to MinDat.org Location Data.

Name Origin:

Named for V. L. Goedken.

Name Pronunciation:

Goedkenite + Pronunciation

Goedkenite Image

Images:

Goedkenite

Comments: Clear, pointed goedkenite crystals epitaxially overgrown on palermoite.
Location: Palermo #1 mine, North Groton, Grafton County, New Hampshire, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Goedkenite Crystallography

Axial Ratios:

a:b:c =1.4721:1:1.2648

Cell Dimensions:

a = 8.45, b = 5.74, c = 7.26, Z = 2; beta = 113.7° V = 322.43 Den(Calc)= 3.97

Crystal System:

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

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

By Intensity(I/I_o): 3.061(1), 2.585(0.7), 2.841(0.6),

Physical Properties of Goedkenite

Cleavage:

{100} Good

Color:

Colorless, Light yellow.

Density:

3.83

Diaphaneity:

Transparent

Hardness:

5 - Apatite

Luster:

Vitreous - Adamantine

Streak:

white

Optical Properties of Goedkenite

Gladstone-Dale:

CI meas= -0.003 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.032 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1708,KPDmeas= 0.177,KC= 0.1765
Ncalc = 1.68 - 1.7

Optical Data:

Biaxial (+), a=1.669, b=1.673, g=1.692, bire=0.0230, 2V(Calc)=50, 2V(Meas)=45-50.

Calculated Properties of Goedkenite

Electron Density:

Bulk Density (Electron Density)=3.64 gm/cc
note: Specific Gravity of Goedkenite =3.83 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_Goedkenite= 39.61 barns/electron
U=PE_Goedkenite x rElectron Density= 144.08 barns/cc.

Radioactivity:

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

Goedkenite Classification

Dana Class:

41.10.04.01 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.10)where (A++ B++)3 (XO4)2 Zq

(41.10.04)Goedkenite Group

41.10.04.01 Goedkenite (Sr,Ca)2Al(PO4)2(OH) P 2₁/m 2/m

41.10.04.02 Bearthite Ca2Al(PO4)2(OH) P 2₁/m 2/m

41.10.04.03 Gamagarite Ba2(Fe,Mn)(VO4)2(OH) P 2₁/m 2/m

41.10.04.04 Tokyoite! Ba2Mn(VO4)2(OH) P 2₁/m 2/m

Strunz Class:

08.BG.05 08 - PHOSPHATES, ARSENATES, VANADATES

08.B - Phosphates, etc. with Additional Anions, without H2O

08.BG -With medium-sized and large cations, (OH, etc.):RO4 = 0.5:1

08.BG.05 Arsenbrackebuschite Pb2(Fe,Zn)(AsO4)2•(H2O) P 2₁/m 2/m

08.BG.05 Bearthite Ca2Al(PO4)2(OH) P 2₁/m 2/m

08.BG.05 Arsentsumebite Pb2Cu(AsO4)(SO4)(OH) P 2₁/m 2/m

08.BG.05 Brackebuschite Pb2(Mn,Fe)(VO4)2(OH) P 2₁/m 2/m

08.BG.05 Feinglosite! Pb2(Zn,Fe)[(As,S)O4]2•(H2O) P 2₁,P 2₁/m Mono

08.BG.05 Gamagarite Ba2(Fe,Mn)(VO4)2(OH) P 2₁/m 2/m

08.BG.05 Goedkenite (Sr,Ca)2Al(PO4)2(OH) P 2₁/m 2/m

08.BG.05 Tsumebite Pb2Cu(PO4)(SO4)(OH) P 2₁/m 2/m

08.BG.05 Calderonite! Pb2Fe(VO4)2(OH) P 2₁/m 2/m

08.BG.05 Bushmakinite! Pb2Al(PO4)(VO4)(OH) P 2₁/m 2/m

08.BG.05 Tokyoite! Ba2Mn(VO4)2(OH) P 2₁/m 2/m

Other Goedkenite Information

References:

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

See Also:

Links to other databases for Goedkenite :
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 - WWW-MINCRYST

Search for Goedkenite using:

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

Visit our Advertisers for Goedkenite :

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

Ask about Goedkenite 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 Goedkenite Specimen Label here :

Goedkenite

(Sr,Ca)2Al(PO4)2(OH)
Dana No: 41.10.04.01 Strunz No: 08.BG.05
Locality:

Notes: