Classification of Goedkenite |
| IMA status: | Approved |
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| Strunz 8th edition ID: | 7/B.24-10
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| 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 |
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| Dana 8th edition ID: | 41.10.4.1
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN 10 : (AB)3(XO4)2Zq |
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| Hey's CIM Ref.: | 19.5.4
19 : Phosphates 5 : Phosphates of Sr and Ba |
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| mindat.org URL: | http://www.mindat.org/min-1718.html Please feel free to link to this page. |
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Type Occurrence of Goedkenite |
| Type Locality: | Palermo No. 1 Mine (Palermo #1 pegmatite), Groton, Grafton Co., New Hampshire, USA |
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| Year of Discovery: | 1975 |
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Physical Properties of Goedkenite |
| Hardness (Mohs): | 5 |
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Crystallography of Goedkenite |
| Crystal System: | Monoclinic |
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| Cell Parameters: | a = 8.45Å, b = 5.74Å, c = 7.26Å β = 113.7° |
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| Ratio: | a:b:c = 1.472 : 1 : 1.265 |
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| Unit Cell Volume: | V 322.43 ų (Calculated from Unit Cell) |
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Optical Data of Goedkenite |
| Type: | Biaxial (+) |
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| RI values: | nα = 1.669 nβ = 1.673 nγ = 1.692 |
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| 2V: | Measured: 45° to 50°, Calculated: 50° |
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| Maximum Birefringence: | δ = 0.023
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | High |
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| Dispersion: | r > v or r < v |
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Chemical Properties of Goedkenite |
| Formula: | |
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| Essential elements: | Al, H, O, P, Sr |
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| All elements listed in formula: | Al, Ca, H, O, P, Sr |
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Relationship of Goedkenite to other Species |
| Member of Group: | |
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Related Minerals - Nickel-Strunz Grouping):
- + | |
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Related Minerals - Hey's Index Grouping:
- + | |
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Other Names for Goedkenite |
| Synonyms: | |
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| Other Languages: | |
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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. |
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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.
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Internet Links for Goedkenite |
| Search Engines: |
Look for Goedkenite on Google
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| External Links: | Look for Goedkenite on WebmineralLook for Goedkenite on Athena MineralogyLook for Goedkenite on WikipediaLook for Goedkenite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Goedkenite in the Natural History Museum (London) online catalogueGoedkenite details from Handbook of Mineralogy (PDF) |
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Localities for Goedkenite |