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Garyansellite

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About GaryanselliteHide

H. Gary Ansell
Formula:
(Mg,Fe)3(PO4)2(OH,O) · 1.5H2O
Colour:
clove-brown
Lustre:
Vitreous
Hardness:
4
Specific Gravity:
3.16
Crystal System:
Orthorhombic
Name:
Named in 1984 by Bozidar Darko Sturman and Pete J. Dunn in honor of Harold Gary Ansell (1943 - ), mineralogist with the Canadian Geological Survey. He was curator of the National Mineral Collection from 1972-1997.
Isostructural with:
Forms a series with kryzhanovskite. Structurally close to other members of the phosphoferrite–reddingite series (or phosphoferrite group).

Small (<1 mm) nearly colorless, zones, fringes, or patches in olive phosphosiderite.

The structure is layered, with layers comprising chains formed by edge-sharing M(2)O4(OH)(H2O) octahedra; these octahedra form dimers and these share edges with separate M(1)O4(H2O)2 octahedra. The chains are linked to layers through the common vertices of M(2); octahedra and octaahedral layers are connected via the phosphate tetrahedra.


Classification of GaryanselliteHide

Approved
Approval Year:
1981
First Published:
1984
8.CC.05

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
C : With only medium-sized cations, RO4:H2O = 1:1.5
40.3.2.5

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
3 : A3(XO4)2·xH2O
19.14.12

19 : Phosphates
14 : Phosphates of Fe and other metals

Physical Properties of GaryanselliteHide

Vitreous
Transparency:
Transparent
Comment:
"bronze on cleavages"
Colour:
clove-brown
Comment:
semitransparent
Streak:
brown
Hardness:
Cleavage:
Distinct/Good
{001}
Density:
3.16(4) g/cm3 (Measured)    3.154 g/cm3 (Calculated)

Optical Data of GaryanselliteHide

Type:
Biaxial (-)
RI values:
nα = 1.733 nβ = 1.757 nγ = 1.761
2V:
Measured: 55° , Calculated: 42°
Max Birefringence:
δ = 0.028
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r < v
Comments:
reddish brown (X=Z), yellow (Y)
Comments:
Orientation: X = b, Y = a, Z = c; absorption: Z = X > Y

Chemical Properties of GaryanselliteHide

Formula:
(Mg,Fe)3(PO4)2(OH,O) · 1.5H2O
IMA Formula:
Mg2Fe3+(PO4)2(OH) · 2H2O
Idealised Formula:
Mg2Fe3+(PO4)2(OH)2(H2O)
Common Impurities:
Mn

Crystallography of GaryanselliteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:
a = 9.45 Å, b = 9.89 Å, c = 8.19 Å
Ratio:
a:b:c = 0.956 : 1 : 0.828
Unit Cell V:
765.44 ų (Calculated from Unit Cell)
Comment:
Space group is Pbna; parameters from Zubkova et al. (2016): a=9.44738, b=9.85976, c=8.14154, V=758.38

Type Occurrence of GaryanselliteHide

General Appearance of Type Material:
Small colorless patches
Place of Conservation of Type Material:
Royal Ontario Museum, Toronto, Canada (registration no. M37306)
Geological Setting of Type Material:
fractures in a sedimentary iron formation; rare, low-temperature species
Associated Minerals at Type Locality:

Synonyms of GaryanselliteHide

Other Language Names for GaryanselliteHide

Relationship of Garyansellite to other SpeciesHide

Other Members of this group:
CorreianevesiteFe2+Mn2+2(PO4)2 · 3H2OOrth. mmm (2/m 2/m 2/m)
Kryzhanovskite(Fe3+,Mn2+)3(PO4)2(OH,H2O)3Orth.
LandesiteMn2+3-xFe3+x(PO4)2(OH)x · (3-x)H2OOrth.
Phosphoferrite(Fe2+,Mn2+)3(PO4)2 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pmna
Reddingite(Mn2+,Fe2+)3(PO4)2 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pmna
Forms a series with:

Related Minerals - Nickel-Strunz GroupingHide

8.CC.05Kryzhanovskite(Fe3+,Mn2+)3(PO4)2(OH,H2O)3Orth.
8.CC.05LandesiteMn2+3-xFe3+x(PO4)2(OH)x · (3-x)H2OOrth.
8.CC.05Phosphoferrite(Fe2+,Mn2+)3(PO4)2 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pmna
8.CC.05Reddingite(Mn2+,Fe2+)3(PO4)2 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pmna
8.CC.10KaatialaiteFe(H2AsO4)3 · 5H2OMon. 2/m
8.CC.15LeogangiteCu10(AsO4)4(SO4)(OH)6 · 8H2OMon. 2/m : B2/b

Related Minerals - Dana Grouping (8th Ed.)Hide

40.3.2.1Phosphoferrite(Fe2+,Mn2+)3(PO4)2 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pmna
40.3.2.2Kryzhanovskite(Fe3+,Mn2+)3(PO4)2(OH,H2O)3Orth.
40.3.2.3Reddingite(Mn2+,Fe2+)3(PO4)2 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pmna
40.3.2.4LandesiteMn2+3-xFe3+x(PO4)2(OH)x · (3-x)H2OOrth.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.14.1CyriloviteNaFe3+3(PO4)2(OH)4 · 2H2OTet. 4 2 2 : P41 21 2
19.14.2KidwelliteNaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33Mon. 2/m : P2/b
19.14.3Rosemaryite(Na,Ca,Mn)(Mn,Fe2+)(Fe3+,Mg)Al(PO4)3Mon. 2/m : P21/b
19.14.4Wyllieite(Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO4)3Mon. 2/m
19.14.5Ferrowyllieite(Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3Mon. 2/m : P21/b
19.14.6NatrodufréniteNaFe2+Fe3+5(PO4)4(OH)6 · 2H2OMon.
19.14.7LeucophosphiteKFe3+2(PO4)2(OH) · 2H2OMon. 2/m : P21/b
19.14.8Spheniscidite(NH4,K)(Fe3+,Al)2(PO4)2(OH) · 2H2OMon.
19.14.9BurangaiteNaFe2+Al5(PO4)4(OH)6 · 2H2OMon. 2/m : B2/b
19.14.10Satterlyite(Fe2+,Mg,Fe)12(PO4)5(PO3OH)(OH,O)6Trig. 3m (3 2/m) : P3 1m
19.14.11UshkoviteMgFe3+2(PO4)2(OH)2 · 8H2OTric.
19.14.13ThadeuiteCa(Mg,Fe2+)3(PO4)2(OH,F)2Orth. 2 2 2 : C2 2 21
19.14.14AnapaiteCa2Fe2+(PO4)2 · 4H2OTric. 1 : P1
19.14.15XanthoxeniteCa4Fe3+2(PO4)4(OH)2 · 3H2OTric. 1 : P1
19.14.16CalcioferriteCa2Fe3+2(PO4)3(OH) · 7H2OMon. 2/m : B2/b
19.14.17MitridatiteCa2Fe3+3(PO4)3O2 · 3H2OMon. 2/m : B2/b
19.14.18MélonjosephiteCaFe2+Fe3+(PO4)2(OH)
19.14.19DelvauxiteCaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed · Amor.
19.14.20CollinsiteCa2Mg(PO4)2 · 2H2OTric. 1 : P1
19.14.21SegeleriteCa2 Mg2 Fe3+2(PO4)4(OH)2 · 8H2OOrth. mmm (2/m 2/m 2/m) : Pcca
19.14.22KingsmountiteCa4(Fe2+,Mn2+)Al4(PO4)6(OH)4 · 12H2OMon. 2 : B2
19.14.23VauxiteFe2+Al2(PO4)2(OH)2 · 6H2OTric. 1 : P1
19.14.24MetavauxiteFe2+Al2(PO4)2(OH)2 · 8H2OMon. 2/m : P21/b
19.14.25ParavauxiteFe2+Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
19.14.26SigloiteFe3+Al2(PO4)2(OH)3 · 7H2OTric.
19.14.27CacoxeniteFe3+24AlO6(PO4)17(OH)12 · 75H2OHex. 6/m : P63/m
19.14.28KoninckiteFe3+PO4 · 3H2OTet.
19.14.29LazuliteMgAl2(PO4)2(OH)2Mon. 2/m : P21/b
19.14.30ScorzaliteFe2+Al2(PO4)2(OH)2Mon. 2/m : P21/b
19.14.31Souzalite(Mg,Fe2+)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2OTric.
19.14.32Gormanite(Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2OTric.
19.14.33ZaïriteBiFe3+3(PO4)2(OH)6Trig. 3m (3 2/m) : R3m

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.

References for GaryanselliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Sturman, B.D., Dunn, P.J. (1984) Garyansellite, a new mineral from Yukon Territory, Canada. American Mineralogist: 69: 207-209.
Anthony, J.W., Bideaux, R.A., Bladh, K.W., Nichols, M.C., Eds. Handbook of Mineralogy, Mineralogical Society of America, Chantilly, VA 20151-1110, USA. http://www.handbookofmineralogy.org/ (2016).
Zubkova, N.V., Pekov, I.V., Kasatkin, A.V., Chukanov, N.V., Ksenofontov, D.A., Pushcharovsky, D.Yu. (2016) Crystal Structure and Refined Formula of Garyansellite Mg2Fe3+(PO4)2(OH)·2H2O. Transactions (Doklady) of the Russian Academy of Sciences/Earth Science Section: 467: 299-302; http://forum.amiminerals.it/viewtopic.php?f=5&t=12873 (2016)

Internet Links for GaryanselliteHide

Localities for GaryanselliteHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Canada
 
  • Yukon
    • Dawson mining district
MinRec 23:4-47
STURMAN, B.D. & DUNN, P.J. (1984): Garyansellite, a new mineral from Yukon Territory. American Mineralogist 69, 207-209. ROBINSON, G.W., VAN VELTHUIZEN, J., ANSELL, H.G. & STURMAN, B.D. (1992): Mineralogy of the Rapid Creek and Big Fish River area, Yukon Territory. Mineralogical Record 23, 1-47.
        • Kulan Camp (Area A; Area 1)
Tomes et al. (2012)
USA
 
  • South Dakota
    • Pennington Co.
      • Keystone District
        • Glendale
No reference listed
Mineral and/or Locality  
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