Graftonite Group
A group of related mineral species
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About Graftonite Group
A group of phospates established by IMA in 2017. The graftonite group is defined by having three distinct sites that are occupied by Fe2+, Mn2+ and Ca2+. These sites have coordination numbers [8], [5] and [6], and these differences lead to very strong order of Fe2+, Mn2+ and Ca2+ over these sites
If the M2,M3Fe2+ > M2,M3Mn2+ then the rootname graftonite is used; the opposite situation favors beusite rootname.
If the M2,M3Fe2+ > M2,M3Mn2+ then the rootname graftonite is used; the opposite situation favors beusite rootname.
Unique Identifiers
Mindat ID:
51596
Long-form identifier:
mindat:1:1:51596:0
GUID
(UUID V4):
(UUID V4):
af8dcbb8-4014-4f2c-ae70-5e69de8a08f3
IMA Classification of Graftonite Group
IMA status notes:
IMA Approved Group Name
Approval year:
2017
First published:
2018
Approval history:
Approved by IMA in February 2017.
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0001437 | Beusite | Steele I M, Olsen E, Pluth J J, Davis A M (1991) Occurrence and crystal structure of Ca-free beusite in the El Sampal IIIA iron meteorite American Mineralogist 76 1985-1989 |  | 1991 | 0 | 293 | |
| 0005239 | Beusite | Wise M A, Hawthorne F C, Cerny P (1990) Crystal structure of Ca-rich beusite from the Yellowknife pegmatite field, Northwest Territories The Canadian Mineralogist 28 141-146 | | 1990 | Yellowknife pegmatite field, Northwest Territories, Canada | 0 | 293 |
| 0020200 | Beusite | Tait K T, Hawthorne F C, Wise M A (2013) The crystal chemistry of the graftonite-beusite minerals Notes: Sample B2 The Canadian Mineralogist 51 653-662 | 2013 | Rice mine, North Groton, New Hampshire, USA | 0 | 293 | |
| 0020201 | Beusite | Tait K T, Hawthorne F C, Wise M A (2013) The crystal chemistry of the graftonite-beusite minerals Notes: Sample B3 The Canadian Mineralogist 51 653-662 | 2013 | Los Aleros, San Luis, Argentina | 0 | 293 | |
| 0020202 | Beusite | Tait K T, Hawthorne F C, Wise M A (2013) The crystal chemistry of the graftonite-beusite minerals Notes: Sample B4 The Canadian Mineralogist 51 653-662 | 2013 | Turkestan Range, Kyrgyzstan | 0 | 293 | |
| 0000170 | Graftonite | Calvo C (1968) The crystal structure of graftonite American Mineralogist 53 742-750 | | 1968 | 0 | 293 | |
| 0000872 | Graftonite | Nord A G, Ericsson T (1982) The cation distribution in synthetic (Fe,Mn)3(PO4)2 graftonite-type solid solutions American Mineralogist 67 826-832 | | 1982 | 0 | 293 | |
| 0020199 | Graftonite | Tait K T, Hawthorne F C, Wise M A (2013) The crystal chemistry of the graftonite-beusite minerals Notes: Sample B1 The Canadian Mineralogist 51 653-662 | 2013 | Lollington beryl mine, Karoi, Hurungwe, Zimbabwe | 0 | 293 | |
| 0020203 | Graftonite | Tait K T, Hawthorne F C, Wise M A (2013) The crystal chemistry of the graftonite-beusite minerals Notes: Sample B5 The Canadian Mineralogist 51 653-662 | 2013 | Palermo mine, Grafton Co., New Hampshire, USA | 0 | 293 | |
| 0020204 | Graftonite | Tait K T, Hawthorne F C, Wise M A (2013) The crystal chemistry of the graftonite-beusite minerals Notes: Sample B6 The Canadian Mineralogist 51 653-662 | 2013 | Mwami district, Hurungwe, Zimbabwe | 0 | 293 | |
| 0020205 | Graftonite | Tait K T, Hawthorne F C, Wise M A (2013) The crystal chemistry of the graftonite-beusite minerals Notes: Sample B7 The Canadian Mineralogist 51 653-662 | 2013 | East Alstead, New Hampshire, USA | 0 | 293 |
CIF Raw Data - click here to close
Relationship of Graftonite Group to other Species
Group Members:
| Beusite | Mn2+Mn2+2 (PO4)2 | Mon. 2/m : P21/b |
| Beusite-(Ca) | CaMn2+2(PO4)2 | Mon. 2/m : P21/b |
| Graftonite | Fe2+Fe2+2(PO4)2 | Mon. 2/m : P21/b |
| Graftonite-(Ca) | CaFe2+2(PO4)2 | Mon. 2/m : P21/b |
| Graftonite-(Mn) | MnFe2+2(PO4)2 | Mon. 2/m : P21/b |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Graftonite Group
mindat.org URL:
https://www.mindat.org/min-51596.html
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References for Graftonite Group
Localities for Graftonite Group
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Parker Mountain Mine, Parker Mountain, Strafford, Strafford County, New Hampshire, USA