Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (2 online) Mindat Auctions

Goedkenite

Big Photo

Palermo No. 1 Mine (Palermo #1 pegmatite), Groton, Grafton Co., New Hampshire, USA
© Dick Dionne

Show Goedkenite Photos (10)
Formula:
(Sr,Ca)
 
2
Al[OH|(PO
 
4
)
 
2
]
System:MonoclinicHardness:5
This page provides mineralogical data about Goedkenite.

Classification of Goedkenite

IMA status:Approved
Strunz 8th edition ID:7/B.24-10
Nickel-Strunz 10th (pending) edition ID:8.BG.05

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
G : With medium-sized and large cations, (OH, etc.):RO4 = 0.5:1
Dana 8th edition ID:41.10.4.1

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
10 : (AB)3(XO4)2Zq
Hey's CIM Ref.:19.5.4

19 : Phosphates
5 : Phosphates of Sr and Ba
mindat.org URL:http://www.mindat.org/min-1718.html
Please feel free to link to this page.

Type Occurrence of Goedkenite

Type Locality:Palermo No. 1 Mine (Palermo #1 pegmatite), Groton, Grafton Co., New Hampshire, USA
Year of Discovery:1975

Physical Properties of Goedkenite

Hardness (Mohs):5

Crystallography of Goedkenite

Crystal System:Monoclinic
Cell Parameters:a = 8.45Å, b = 5.74Å, c = 7.26Å
β = 113.7°
Ratio:a:b:c = 1.472 : 1 : 1.265
Unit Cell Volume:V 322.43 ų (Calculated from Unit Cell)

Optical Data of Goedkenite

Type:Biaxial (+)
RI values: nα = 1.669 nβ = 1.673 nγ = 1.692
2V:Measured: 45° to 50°, Calculated: 50°
Maximum Birefringence:δ = 0.023

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:r > v or r < v

Chemical Properties of Goedkenite

Formula:
(Sr,Ca)
 
2
Al[OH|(PO
 
4
)
 
2
]
Essential elements:Al, H, O, P, Sr
All elements listed in formula:Al, Ca, H, O, P, Sr

Relationship of Goedkenite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.BG.05Arsentsumebite
Pb
 
2
Cu[OH|SO
 
4
|AsO
 
4
]
8.BG.05Bearthite
Ca
 
2
Al[OH|(PO
 
4
)
 
2
]
8.BG.05Brackebuschite
Pb
 
2
(Mn
3+
 
,Fe
3+
 
)[OH|(VO
 
4
)
 
2
]
8.BG.05Gamagarite
Ba
 
2
(Fe
3+
 
,Mn
3+
 
)[OH|(VO
 
4
)
 
2
]
8.BG.05UM1994-19-PO:CuHMoPb
Pb
 
2
CuOHPO
 
4
(Mo,As,Cr,Ga)O
 
4
8.BG.05Tsumebite
Pb
 
2
Cu[OH|SO
 
4
|PO
 
4
]
8.BG.05Arsenbrackebuschite
Pb
 
2
(Fe
3+
 
,Zn
2+
 
)[(OH,H
 
2
O)|(AsO
 
4
)
 
2
]
8.BG.05Feinglosite
Pb
 
2
(Zn,Fe
2+
 
)[OH|SO
 
4
|AsO
 
4
]
8.BG.05Bushmakinite
Pb
 
2
Al[OH|PO
 
4
|VO
 
4
]
8.BG.05Tokyoite
Ba
 
2
(Mn
3+
 
,Fe
3+
 
)[OH|(VO
 
4
)
 
2
]
8.BG.05Calderónite
Pb
 
2
Fe
3+
 
[OH|(VO
 
4
)
 
2
]
8.BG.10Mélonjosephite
CaFe
2+
 
Fe
3+
 
[OH|(PO
 
4
)
 
2
]
8.BG.15Tancoite
LiNa
 
2
Al[OH|HPO
 
4
|PO
 
4
]
Related Minerals - Hey's Index Grouping:

- +
19.5.1Strontiowhitlockite
Sr
 
9
MgH[PO
 
4
]
 
7
19.5.2Belovite-(Ce)
NaSr
 
3
(Ce,La)[(F,OH)|(PO
 
4
)
 
3
]
19.5.3Goyazite
SrAl
 
3
[(OH)
 
5
|(PO
 
4
)
 
2
] · H
 
2
O
19.5.5Palermoite
(Li,Na)
 
2
(Sr,Ca)Al
 
4
[PO
 
4
]
 
4
(OH)
 
4
19.5.6Nabaphite
NaBaPO
 
4
·9H
 
2
O
19.5.7Olgite
Ba(NaSr)
 
2
Na[PO
 
4
]
 
2
19.5.8Nastrophite
Na(Sr,Ba)PO
 
4
·9H
 
2
O
19.5.9Jagowerite
BaAl
 
2
[OH|PO
 
4
]
 
2
19.5.10Gorceixite
BaAl
 
3
[(OH)
 
5
|(PO
 
4
)
 
2
] · H
 
2
O
19.5.11Penikisite
Ba(Mg,Fe
2+
 
,Ca)
 
2
Al
 
2
[OH|PO
 
4
]
 
3
19.5.12Curetonite
Ba
 
4
Al
 
3
Ti(PO
 
4
)
 
4
(O,OH)
 
6
19.5.13Bjarebyite
(Ba,Sr)(Mn
2+
 
,Fe
2+
 
,Mg)
 
2
Al
 
2
[OH|PO
 
4
]
 
3
19.5.14Kulanite
Ba(Fe
2+
 
,Mn
2+
 
,Mg)
 
2
(Al,Fe
3+
 
)
 
2
[OH|PO
 
4
]
 
3
19.5.15Perloffite
Ba(Mn
2+
 
,Fe
2+
 
)
 
2
Fe
3+
2
[OH|PO
 
4
]
 
3

Other Names for Goedkenite

Synonyms:
IMA1974-004
Other Languages:
German:Goedkenit
Russian:Гоудкенит
Spanish:Goedkenita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Goedkenite

Reference List:Moore, P. B., Irving, A. J. and Kampf, A. R. (1975): Foggite, CaAl(OH)2(H2O)[PO4]; goedkenite, (Sr,Ca)2Al(OH)[PO4]2; and samuelsonite, (Ca,Ba)Fe22+Mn22+Ca8Al2(OH)2[PO4]10. Three new species from the Palermo No. 1 pegmatite, North Groton, New Hampshire. American Mineraleralogist: 60, 957-964.

Articles/Blogs about Goedkenite

Internet Links for Goedkenite

Search Engines:
  • Look for Goedkenite on Google
  • Look for Goedkenite images on Google
    • External Links:
  • Look for Goedkenite on Webmineral
  • Look for Goedkenite on Athena Mineralogy
  • Look for Goedkenite on Wikipedia
  • Look for Goedkenite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Goedkenite in the Natural History Museum (London) online catalogue
  • Goedkenite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Search for Goedkenite on minvision.com
  • Buy minerals from Mineralium.com
  • Top quality minerals from Kristalle of California
  • Wendel Minerals - Auktion & Shop
  • Buy Minerals and Crystals from Crystalarium.com
  • Buy Fine Minerals from mineralsweb.com
  • Search for Goedkenite at Thames Valley Minerals
  • Fabre Minerals - search for Goedkenite specimens
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Buy fine minerals and gemstones from Pala International
  • rare and unusual minerals mainly crystallized
  • Buy from David K Joyce minerals
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to sponsor this page.

    Localities for Goedkenite

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    USA
     
    • New Hampshire
      • Grafton Co.
        • Groton
    		Amer.Min.(1975) 60, 957-964
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon & Ida Ralph 1993-2008. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register.