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Graftonite Group

A group of related mineral species

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Photos of Graftonite Group (63)Discuss Graftonite Group

Graftonite Group Gallery Search Photos of Graftonite Group

Edit Graftonite Group Add Synonym Edit CIF structures Clear Cache

Graftonite, etc.

Parker Mountain Mine, Strafford, Strafford County, New Hampshire, USA

Graftonite, etc.

Rice Quarry, Groton, Grafton County, New Hampshire, USA

Beusite

Remmelberg gravel pit, Theisseil, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany

Graftonite, etc.

Parker Mountain Mine, Strafford, Strafford County, New Hampshire, USA

Graftonite, etc.

Rice Quarry, Groton, Grafton County, New Hampshire, USA

Beusite

Remmelberg gravel pit, Theisseil, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany

Graftonite, etc.

Parker Mountain Mine, Strafford, Strafford County, New Hampshire, USA

Graftonite, etc.

Rice Quarry, Groton, Grafton County, New Hampshire, USA

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About Graftonite GroupHide

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.

Unique IdentifiersHide

Mindat ID:

51596

Long-form identifier:

mindat:1:1:51596:0

IMA Classification of Graftonite GroupHide

IMA status notes:

IMA Approved Group Name

Approval year:

2017

First published:

2018

Approval history:

Approved by IMA in February 2017.

Chemical AnalysisHide

Oxide wt%:

	1
P₂O₅	41.63 %
FeO	19.43 %
MnO	23.63 %
CaO	15.45 %
Total:	100.14 %

Empirical formulas:

Sample ID	Empirical Formula
2	M(1)(Ca_0.98Mn_0.02)M(2),M(3)(Fe_1.38Mn_0.56Mg_0.05)Σ3(PO₄)₂
3	M(1)(Mn_0.70Ca_0.30)M(2),M(3)(Fe_1.34Mn_0.60Mg_0.06Zn_0.01)Σ₃(PO₄)₂
1	(Ca_0.94Fe_0.92Mn_1.13)_Σ2.99(PO₄)_2.00

Sample references:

ID	Type	Locality	Reference	Notes
1	Type Specimen	Pegmatite between Upper Ross Lake and Redout Lake, Yellowknife Pegmatite field, Northwest Territories, Canada	Hawthorne, F.C., Wise, M.A., ?ern	Electron microprobe. The empirical formula was normalized on the basis of 8 anions pfu.
2	Type Specimen	Michałkowa pegmatites, Gmina Świdnica, Świdnica County, Lower Silesian Voivodeship, Poland	Pieczka, Adam, Hawthorne, Frank C., Ball, Neil, Abdu, Yassir, Gołębiowska, Bożena, Włodek, Adam, Żukrowski, Jan (2018) Graftonite-(Mn), ideally ^M1Mn^M2,M3Fe₂(PO₄)₂, and graftonite-(Ca), ideally ^M1Ca^M2,M3Fe₂(PO₄)₂, two new minerals of the graftonite group from Poland. Mineralogical Magazine, 82 (6) 1307-1322 doi:10.1180/minmag.2017.081.109
3	Type Specimen	Lutomia Górna, Gmina Świdnica, Świdnica County, Lower Silesian Voivodeship, Poland	Pieczka, Adam, Hawthorne, Frank C., Ball, Neil, Abdu, Yassir, Gołębiowska, Bożena, Włodek, Adam, Żukrowski, Jan (2018) Graftonite-(Mn), ideally ^M1Mn^M2,M3Fe₂(PO₄)₂, and graftonite-(Ca), ideally ^M1Ca^M2,M3Fe₂(PO₄)₂, two new minerals of the graftonite group from Poland. Mineralogical Magazine, 82 (6) 1307-1322 doi:10.1180/minmag.2017.081.109	With complete order of Ca at the M(1) site.

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Year	Locality	Temp (K)
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	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	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	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	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	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	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	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	293
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		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		293
0000170	Graftonite	Calvo C (1968) The crystal structure of graftonite American Mineralogist 53 742-750	1968		293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Graftonite'
loop_
_publ_author_name
'Tait K T'
'Hawthorne F C'
'Wise M A'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 51 
_journal_year 2013
_journal_page_first 653
_journal_page_last 662
_publ_section_title
;
 The crystal chemistry of the graftonite-beusite minerals
 Notes: Sample B7
 Note: O7 y-coordinate edited by author
;
_database_code_amcsd 0020205
_chemical_compound_source 'East Alstead, New Hampshire, USA'
_chemical_formula_sum 'Mn1.01 Ca.37 Fe1.51 Mg.11 P2 O8'
_cell_length_a 8.8072
_cell_length_b 11.5131
_cell_length_c 6.1372
_cell_angle_alpha 90
_cell_angle_beta 99.243
_cell_angle_gamma 90
_cell_volume 614.221
_exptl_crystal_density_diffrn      3.755
_symmetry_space_group_name_H-M 'P 1 21/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,1/2+z'
  '-x,1/2+y,1/2-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Mn(1)   0.94550   0.11950   0.83860   0.63000   0.01720
Ca(1)   0.94550   0.11950   0.83860   0.37000   0.01720
Fe(1)   0.71680   0.07885   0.32810   0.89000   0.01990
Mg(1)   0.71680   0.07885   0.32810   0.11000   0.01990
Fe(2)   0.36221   0.19137   0.12840   0.62000   0.01160
Mn(2)   0.36221   0.19137   0.12840   0.38000   0.01160
P(1)   0.09320   0.13510   0.39550   1.00000   0.00980
P(2)   0.60310   0.08860   0.80660   1.00000   0.00910
O(1)   0.07840   0.06810   0.17690   1.00000   0.01560
O(2)   0.47620   0.17650   0.82940   1.00000   0.01340
O(3)   0.94150   0.19650   0.41850   1.00000   0.02240
O(4)   0.69270   0.12710   0.62370   1.00000   0.01380
O(5)   0.21720   0.22810   0.38160   1.00000   0.01840
O(6)   0.72650   0.08870   0.01530   1.00000   0.01270
O(7)   0.13830   0.05980   0.60030   1.00000   0.02020
O(8)   0.53380  -0.03440   0.76250   1.00000   0.01120

Relationship of Graftonite Group to other SpeciesHide

Graftonite Group Members:

Beusite	Mn²⁺Mn²⁺₂ (PO₄)₂	Mon. 2/m : P2₁/c
Beusite-(Ca)	CaMn²⁺₂(PO₄)₂	Mon. 2/m : P2₁/c
Graftonite	Fe²⁺Fe²⁺₂(PO₄)₂	Mon. 2/m : P2₁/c
Graftonite-(Ca)	CaFe²⁺₂(PO₄)₂	Mon. 2/m : P2₁/c
Graftonite-(Mn)	MnFe²⁺₂(PO₄)₂	Mon. 2/m : P2₁/c

Click on any node to view relationships. Formula-derived relationship network for the group members above. Use Find related species to add formula-neighbour species outside the current group view. Solid links show inferred chemical differences; dashed violet links show same-formula crystallographic differences. Hydration states are not treated as relationship changes. These relationships do not imply any real-world substitution reactions between these species.

Other InformationHide

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 GroupHide

mindat.org URL:

https://www.mindat.org/min-51596.html
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References for Graftonite GroupHide

Reference List:

Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2017) New minerals and nomenclature modifications approved in 2017. CNMNC Newsletter No 36. Mineralogical Magazine, 81 (2) 403-409 doi:10.1180/minmag.2017.081.022

Hawthorne, Frank C., Pieczka, Adam (2018) Classification of the minerals of the graftonite group. Mineralogical Magazine, 82 (6) 1301-1306 doi:10.1180/minmag.2017.081.092

Localities for Graftonite GroupHide

Showing 197 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the

symbol to view information about a locality. The

symbol next to localities in the list can be used to jump to that position on the map.

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Locality ListHide

- 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). ~~Struck out~~ - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.


Africa
Sahara Desert ⓘ Sahara 03505 meteorite	[Graftonite] V. V. Sharygin (2016)

Antarctica
East Antarctica Wisconsin Range ⓘ Graves Nunataks meteorites	[Graftonite] Floss (1999)
ⓘ Graves Nunataks 95209 meteorite	[Graftonite] Floss (1999)

Argentina
Chubut Province Tehuelches department Nueva Lubecka ⓘ El Sampal meteorite	[Beusite, Graftonite] Steele et al. (1991)
Córdoba Province ⓘ Pocho Department	[Beusite] Colombo et al. (2012)
Chancani District