Ferrisicklerite
A variety of Triphylite
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About Ferrisicklerite
Formula:
Li1-x(Fe3+xFe2+1-x)PO4
Colour:
Yellow-brown to dark brown
Lustre:
Dull, Earthy
Hardness:
4
Specific Gravity:
3.2 - 3.4
Crystal System:
Orthorhombic
Name:
From FERRI- for trivalent iron (ferric iron) and sicklerite in allusion to its composition as the ferric iron end member of the series with sicklerite.
A variety of Triphylite
DISCREDITED (intermediate phases in the triphylite–heterosite solid solution).
Occurs only as an alteration product of Triphylite and Lithiophilite, commonly as rims around partly altered masses or crystals of the latter species.
Ferrisicklerite and Sicklerite are intermediate varieties between the unoxidized and unleached lithiophilite and triphylite end-members and the completely leached and appropriately oxidized end-products, the Heterosite-Purpurite Series, and are not valid species (Lyalina et al., 2023).
DISCREDITED (intermediate phases in the triphylite–heterosite solid solution).
Occurs only as an alteration product of Triphylite and Lithiophilite, commonly as rims around partly altered masses or crystals of the latter species.
Ferrisicklerite and Sicklerite are intermediate varieties between the unoxidized and unleached lithiophilite and triphylite end-members and the completely leached and appropriately oxidized end-products, the Heterosite-Purpurite Series, and are not valid species (Lyalina et al., 2023).
Unique Identifiers
Mindat ID:
1499 (as Ferrisicklerite)
4020 (as Triphylite)
4020 (as Triphylite)
Long-form identifier:
mindat:1:1:1499:7 (as Ferrisicklerite)
mindat:1:1:4020:0 (as Triphylite)
mindat:1:1:4020:0 (as Triphylite)
GUID
(UUID V4):
(UUID V4):
ee20a838-f557-4258-8d9f-b96ef01b3490 (as Ferrisicklerite)
715f7007-29b0-41a6-8b7b-b72d61866e25 (as Triphylite)
715f7007-29b0-41a6-8b7b-b72d61866e25 (as Triphylite)
IMA Classification of Ferrisicklerite
Discredited, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Li1-x(Fe3+,Mn2+)(PO4)
First published:
1937
Approval history:
Discredited by IMA October 2022 (establishment of Triphylite Group); cf. Lyalina et al. (2023).
Classification of Ferrisicklerite
8.AB.10
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
B : With medium-sized cations
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
B : With medium-sized cations
Dana 7th ed.:
38.1.4.1
38.1.4.1
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
1 : ABXO4
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
1 : ABXO4
19.1.12
19 : Phosphates
1 : Phosphates of the alkali metals
19 : Phosphates
1 : Phosphates of the alkali metals
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference |
|---|---|---|
| Fsik | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Fsk | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Ferrisicklerite
Dull, Earthy
Transparency:
Opaque
Colour:
Yellow-brown to dark brown
Streak:
Light yellow-brown, brown, reddish brown
Hardness:
4 on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
On {100}, good.
On {100}, good.
Fracture:
Irregular/Uneven
Density:
3.2 - 3.4 g/cm3 (Measured) 3.257 g/cm3 (Calculated)
Optical Data of Ferrisicklerite
Type:
Biaxial (-)
RI values:
nα = 1.790(5) nβ = 1.805(5) nγ = 1.820(5)
2V:
Measured: 85° , Calculated: 88°
Birefringence:
0.021
Max Birefringence:
δ = 0.030
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
single; r > v, very strong.
Pleochroism:
Visible
Comments:
X = a = Dark reddish
Y = Lighter reddish
Z = Very light reddish
Y = Lighter reddish
Z = Very light reddish
Chemistry of Ferrisicklerite
Mindat Formula:
Li1-x(Fe3+xFe2+1-x)PO4
Elements listed:
Chemical Analysis
Oxide wt%:
| 1 | |
|---|---|
| P2O5 | 42,21 % |
| Fe2O3 | 28,22 % |
| FeO | 1,33 % |
| MnO | 20,20 % |
| MgO | 0,61 % |
| CaO | 0,60 % |
| Na2O | 0,08 % |
| K2O | 0,17 % |
| Li2O | 2,78 % |
| H2O+ | 3,24 % |
| Insol | 0,60 % |
| Total: | 96 % |
Crystallography of Ferrisicklerite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pmna
Cell Parameters:
a = 5.9160 Å, b = 10.026 Å, c = 4.7956 Å
Ratio:
a:b:c = 0.59 : 1 : 0.478
Unit Cell V:
284.45 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Massive as an oxidation of triphylite.
Comment:
Space Group: Pmnb.
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) |
|---|---|---|---|---|---|---|---|
| 0009574 | Ferrisicklerite | Alberti A (1976) Crystal structure of ferrisicklerite, Li<1(Fe3+,Mn2+)PO4 Acta Crystallographica B32 2761-2764 |  | 1976 | Sidi-Bou-Othmane, Jebilet, Morocco | 0 | 293 |
| 0017986 | Ferrisicklerite | Bjoerling C, Westgren A (1938) Minerals of the Varutrask pegmatite. IX. X-ray studies on triphylite, varulite, and their oxidation products _cod_database_code 1011090 Geologiska Foreningens i Stockholm Forhandlingar 60 67-72 | 1938 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.01 Å | (70) |
| 4.33 Å | (40) |
| 3.82 Å | (20) |
| 3.73 Å | (2) |
| 3.49 Å | (30) |
| 3.47 Å | (10) |
| 2.989 Å | (10) |
| 2.959 Å | (100) |
| 2.743 Å | (8) |
| 2.490 Å | (35) |
| 2.444 Å | (15) |
| 2.333 Å | (6) |
| 2.309 Å | (7) |
| 2.251 Å | (5) |
| 2.223 Å | (7) |
| 2.170 Å | (3) |
| 2.164 Å | (4) |
| 1.863 Å | (5) |
| 1.794 Å | (5) |
| 1.766 Å | (4) |
| 1.746 Å | (7) |
| 1.733 Å | (3) |
| 1.713 Å | (4) |
| 1.663 Å | (4) |
| 1.608 Å | (8) |
| 1.601 Å | (12) |
| 1.550 Å | (4) |
| 1.479 Å | (15) |
| 1.456 Å | (8) |
Comments:
ICDD 29-808
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 34 : Complex granite pegmatites | |
| Stage 7: Great Oxidation Event | <2.4 |
| 47c : [Carbonates, phosphates, borates, nitrates] |
First Recorded Occurrence of Ferrisicklerite
General Appearance of First Recorded Material:
Alteration rim about triphylite.
Place of Conservation of First Recorded Material:
n.d.
Geological Setting of First Recorded Material:
Late hydrothermal alteration or weathering of triphylite.
Associated Minerals at First Recorded Locality:
Reference:
Quensel P (1937) Minerals of the Varuträsk Pegmatite. I. The lithium - manganese phosphates. Geologiska Föreningens i Stockholm Förhandlingar 59, 77-96
Synonyms of Ferrisicklerite
Other Language Names for Ferrisicklerite
Russian:Феррисиклерит
Simplified Chinese:铁磷锂锰矿
Spanish:Ferrisicklerita
Pseudoheterosita
Pseudoheterosita
Traditional Chinese:鐵磷鋰錳礦
Common Associates
Associated Minerals Based on Photo Data:
| 12 photos of Ferrisicklerite associated with Heterosite | (Fe3+,Mn3+)PO4 |
| 1 photo of Ferrisicklerite associated with Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
| 1 photo of Ferrisicklerite associated with Triphylite | LiFe2+PO4 |
| 1 photo of Ferrisicklerite associated with Hafnian Zircon | (Zr,Hf)SiO4 |
| 1 photo of Ferrisicklerite associated with Phosphosiderite | FePO4 · 2H2O |
| 1 photo of Ferrisicklerite associated with Pyrite | FeS2 |
| 1 photo of Ferrisicklerite associated with Verdelite | A(D3)G6(T6O18)(BO3)3X3Z |
| 1 photo of Ferrisicklerite associated with Muscovite | KAl2(AlSi3O10)(OH)2 |
| 1 photo of Ferrisicklerite associated with Manganese-bearing Fluorapatite | (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH) |
| 1 photo of Ferrisicklerite associated with Purpurite | Mn3+(PO4) |
Related Minerals - Strunz-mindat Grouping
| 8.AB. | Rodolicoite | Fe3+PO4 |
| 8.AB. | Johanngeorgenstadtite | Ni2+4.5(AsO4)3 |
| 8.AB. | Borisenkoite | Cu3[(V,As)O4]2 |
| 8.AB. | Niasite | Ni2+4.5(AsO4)3 |
| 8.AB. | Olsenite | KFe4(PO4)3 |
| 8.AB. | Karwowskiite | Ca9Mg(Fe2+0.5◻0.5)(PO4)7 |
| 8.AB.05 | Farringtonite | Mg3(PO4)2 |
| 8.AB.10 | Heterosite | (Fe3+,Mn3+)PO4 |
| 8.AB.10 | Lithiophilite | LiMn2+PO4 |
| 8.AB.10 | Natrophilite | NaMn2+PO4 |
| 8.AB.10 | Purpurite | Mn3+(PO4) |
| 8.AB.10 | Sicklerite | Li1-x(Mn3+xMn2+1-x)PO4 |
| 8.AB.10 | Simferite | LiMg(PO4) |
| 8.AB.10 | Triphylite | LiFe2+PO4 |
| 8.AB.10 | Karenwebberite | NaFe2+PO4 |
| 8.AB.15 | Sarcopside | Fe2+3(PO4)2 |
| 8.AB.15 | Chopinite | Mg3(PO4)2 |
| 8.AB.15 | Zavalíaite | Mn2+3(PO4)2 |
| 8.AB.20 | Beusite | Mn2+Mn2+2 (PO4)2 |
| 8.AB.20 | Graftonite | Fe2+Fe2+2(PO4)2 |
| 8.AB.20 | Graftonite-(Ca) | CaFe2+2(PO4)2 |
| 8.AB.20 | Graftonite-(Mn) | MnFe2+2(PO4)2 |
| 8.AB.20 | Beusite-(Ca) | CaMn2+2(PO4)2 |
| 8.AB.25 | Xanthiosite | Ni3(AsO4)2 |
| 8.AB.30 | Lammerite | Cu3(AsO4)2 |
| 8.AB.30 | Paralammerite | Cu3(AsO4)2 |
| 8.AB.35 | Mcbirneyite | Cu3(VO4)2 |
| 8.AB.35 | Stranskiite | Zn2Cu(AsO4)2 |
| 8.AB.35 | Pseudolyonsite | Cu3(VO4)2 |
| 8.AB.40 | Lyonsite | Cu3Fe4(VO4)6 |
| 8.AB.40 | Michalskiite | Fe3+1.33Cu2+2(MgFe3+)2(VO4)6 |
Fluorescence of Ferrisicklerite
Not fluorescent in UV
Other Information
Notes:
Soluble in acids.
Alters to the Heterosite-Purpurite Series by oxidation of the Mn'' and leaching of the Li.
Alters to the Heterosite-Purpurite Series by oxidation of the Mn'' and leaching of the Li.
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 Ferrisicklerite
mindat.org URL:
https://www.mindat.org/min-1499.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Ferrisicklerite
Reference List:
Dyar, M. D., Jawin, E. R., Breves, E., Marchand, G., Nelms, M., Lane, M. D., Mertzman, S. A., Bish, D. L., Bishop, J. L. (2014) Mössbauer parameters of iron in phosphate minerals: Implications for interpretation of martian data. American Mineralogist, 99 (5) 914-942 doi:10.2138/am.2014.4701
Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2022) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 70. European Journal of Mineralogy, 34 (6) 591-601 doi:10.5194/ejm-34-591-2022
Localities for Ferrisicklerite
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.
Angola | |
| Antonio Olimpio Gonçalves et al. (2009) +1 other reference |
Argentina | |
| Galliski et al. (2020) |
| OYARZABAL et al. (H2O) +2 other references |
| OYARZABAL et al. (H2O) |
Australia | |
| Pegmatites of Western Australia +2 other references |
Austria | |
| Niedermayr et al. (1995) |
Brazil | |
| Queiroz (2016) | |
| Baijot et al. (2014) |
| Cassedanne (1983) |
| Cassedanne et al. (1999) +1 other reference |
| Mineralogical Record: 22: 183. |
| Murdoch (1955) |
| Amores et al. (2014) +1 other reference |
Canada | |
| Econ Geol (1995) |
China | |
| Huan Hu et al. (2007) |
| Rao et al. (2017) | |
| Zhiguo Liu et al. (2005) |
Czech Republic | |
| Povondra et al. (eds.) +1 other reference |
| Luna J.: Lithný pegmatit od Krasonic u ... |
Europe | |
| Keller et al. (1997) | |
Finland | |
| Palache et al. (1951) |
| Lahti (ed.) | |
| Alviola (1993) | |
| Alviola |
| Alviola (1987) | |
France | |
| Inventaire Minéralogique de la France ... |
| Inventaire mineralogique de l'Ariege (Editions BRGM 1984) |
| Berbain et al. (2012) |
| Berbain et al. (2012) |
Germany | |
| Palache et al. (1951) +1 other reference |
| Dill (2009) |
| Dill H.G.: "Mineralogical and chemical ... | |
| Mücke et al. (1989) | |
| Wittern (2001) +1 other reference | |
Italy | |
| VIGNOLA et al. (2007) |
| Vignola et al. (2011) | |
| Vignola et al. (2011) +1 other reference |
| Guastoni et al. (2007) |
Kazakhstan | |
| Ginzburg (1950) +2 other references |
Morocco | |
| FRANSOLET et al. (1985) |
| Bulletin de Minéralogie 99 (1976) |
| Favreau (2012) | |
Namibia | |
| Keller (1991) |
| Keller (1991) | |
| Keller (1991) | |
| Keller (1991) |
| Keller (1991) |
| Keller (1991) | |
| von Bezing (2007) | |
| Keller (1991) | |
| Förch (1998) |
| Keller (1991) | |
| Keller (1991) |
| Keller (1991) | |
| Keller (1991) | |
| Keller (1991) | |
| Keller (1991) |
| Keller (1991) |
| Keller (1991) | |
| Keller (1991) | |
| Keller (1991) | |
| Keller (1991) | |
| Keller (1991) |
| Keller (1991) |
| Keller (1991) |
| Keller (1991) |
| P. Keller and O. von Knorring +1 other reference | |
| Keller (1991) | |
| Keller (1991) | |
| Keller (1991) | |
| Keller (1991) | |
| Keller (1991) | |
| Keller (1991) | |
| Keller (1991) |
| Keller (1991) |
| Contrib Mineral Petrol (1986) |
| von Bezing (2007) |
Poland | |
| Pieczka A. |
| Pieczka A. et al. (2003) |
| Łodziński M. & Sitarz M. 2008: Chemical and Spectroscopic Characterization of Some Phosphates Accessory Minerals from Pegmatites of the Sowie Mts (Owles Mts) +1 other reference | |
| Pieczka et al. (2017) | |
Portugal | |
| Martins et al. (2011) |
| Novák (2009) | |
Romania | |
| Calin N et al. (2014) |
Rwanda | |
| Royal Museum for Central Africa |
| Bertossa (1968) +1 other reference |
South Korea | |
| Kinosaki (1940) |
Spain | |
| Roda et al. (2001) |
| Roda-Robles M E et al. (2014) | |
| American Mineralogist 89:110-125 (2004) +1 other reference |
| Encarnación Roda-Robles (2007) +1 other reference | |
| Roda-Robles et al. (2012) |
| Roda-Robles et al. (1998) |
| & locality references +1 other reference |
| Bareche (2005) |
| Garate-Olave I et al. (2014) |
Sweden | |
| Gustafson (1989) +1 other reference |
| Gustafsson (1991) +1 other reference |
| Swedish Museum of Natural History (Naturarv database) |
| Palache et al. (1951) |
Switzerland | |
| Vignola et al. (2008) |
| Stalder et al. (1998) | |
USA | |
| Rocks & Minerals: 70 (5) |
| San Diego Natural History Museum |
| Eckel et al. (1997) |
| Eckel et al. (1997) | |
| Eckel et al. (1997) | |
| Rocks & Minerals: 62: 234. |
| Januzzi et al. (1976) |
| Schooner (1958) |
| GUIDEBOOK 1 Mineral Collecting in the ... |
| Found during study of Ryerson Hill ... |
| Gleba (2008) |
| Harvard Mineralogical Museum |
| Tom Mortimer |
| USGS Prof Paper 353 +3 other references |
| Rocks & Min. +2 other references | |
| Thompson et al. (2022) |
| Palache et al. (1951) |
| Dana 7:II:673 +2 other references |
| Hanahan (1985) |
| King (n.d.) |
| Roberts et al. (1965) | |
| Rocks & Minerals: 60: 117-118. | |
| Campbell et al. (1985) | |
| Campbell et al. (1985) |
| Smith et al. (2000) | |
| Rocks & Minerals: 67 (6) |
| Am Min 70:9-10 pp 1044-1049 |
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Palermo No. 1 Mine, Groton, Grafton County, New Hampshire, USA