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Koninckite
A valid IMA mineral species - grandfathered
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About Koninckite
Laurent-Guillaume de Koninck
Formula:
Fe3+PO4 · 3H2O
Colour:
Yellow; light yellow to colourless in transmitted light
Lustre:
Vitreous
Hardness:
3½ - 4
Specific Gravity:
2.40
Crystal System:
Tetragonal
Name:
Named by Giuseppe Cesàro in 1883 in honor of Laurent-Guillaume de Koninck (3 May 1809, Leuven, Belgium – 16 July 1887, Liège, Belgium), Professor at the University of Liège, Belgium. He identified hundreds of new paleontological Paleozoic species. He received the Wollaston medal in 1875.
Type Locality:
This page provides mineralogical data about Koninckite.
Unique Identifiers
Mindat ID:
2249
Long-form identifier:
mindat:1:1:2249:7
GUID
(UUID V4):
(UUID V4):
b72e904b-f1f3-4110-a8ff-c47bd5af9d24
IMA Classification of Koninckite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Fe3+(PO4) · 3H2O
First published:
1884
Classification of Koninckite
8.CE.55
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
E : With only medium-sized cations, RO4:H2O about 1:2.5
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
E : With only medium-sized cations, RO4:H2O about 1:2.5
40.4.2.1
40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
4 : (AB)5(XO4)2·xH2O
40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
4 : (AB)5(XO4)2·xH2O
19.14.28
19 : Phosphates
14 : Phosphates of Fe and other metals
19 : Phosphates
14 : Phosphates of Fe and other metals
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Kon | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Koninckite
Vitreous
Transparency:
Transparent
Colour:
Yellow; light yellow to colourless in transmitted light
Streak:
Pale yellow
Hardness:
3½ - 4 on Mohs scale
Cleavage:
Distinct/Good
One transverse to elongation.
One transverse to elongation.
Density:
2.40(3) g/cm3 (Measured) 2.56 g/cm3 (Calculated)
Optical Data of Koninckite
Type:
Biaxial
RI values:
nα = 1.645 nβ = 1.656 nγ = 1.656
Max Birefringence:
δ = 0.011
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:
Moderate
Dispersion:
relatively strong
Comments:
Uniaxial (+), may be biaxial to nearly isotropic.
Chemistry of Koninckite
Mindat Formula:
Fe3+PO4 · 3H2O
Elements listed:
Common Impurities:
Al
Crystallography of Koninckite
Crystal System:
Tetragonal
Class (H-M):
4 2 2 - Trapezohedral
Space Group:
P41 21 2
Cell Parameters:
a = 11.9800(5) Å, c = 14.618(1) Å
Ratio:
a:c = 1 : 1.22
Unit Cell V:
2,097.98 ų (Calculated from Unit Cell)
Z:
8
Morphology:
Small spherical aggregates of radiating needles.
Comment:
Plášil et al. (2015)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.42 Å | (100) |
| 5.99 Å | (8) |
| 4.48 Å | (4) |
| 3.85 Å | (10) |
| 3.77 Å | (28) |
| 2.98 Å | (18) |
| 2.83 Å | (9) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 21 : Chemically precipitated carbonate, phosphate, iron formations | |
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47c : [Carbonates, phosphates, borates, nitrates] |
Type Occurrence of Koninckite
Place of Conservation of Type Material:
University of Liège, Liège, Belgium, 9251–9257.
Geological Setting of Type Material:
Secondary mineral in phosphatic sedimentary rocks.
Associated Minerals at Type Locality:
Reference:
Cesàro, G. (1883) Sur la koninckite, nouveau phosphate ferrique hydrate. Annales de la Société Géologique de Belgique: 11: 247-257 (in French).
Other Language Names for Koninckite
Common Associates
Associated Minerals Based on Photo Data:
| 3 photos of Koninckite associated with Cacoxenite | Fe3+24AlO6(PO4)17(OH)12 · 75H2O |
| 3 photos of Koninckite associated with Baryte | BaSO4 |
| 2 photos of Koninckite associated with Graphite | C |
| 1 photo of Koninckite associated with Delvauxite | CaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed |
| 1 photo of Koninckite associated with Quartz | SiO2 |
| 1 photo of Koninckite associated with Richellite | CaFe3+2(PO4)2(OH,F)2 |
Related Minerals - Strunz-mindat Grouping
| 8.CE.X | Babánekite | Cu3(AsO4)2 · 8H2O |
| 8.CE. | Monteneroite | Cu2+Mn2+2(AsO4)2 · 8H2O |
| 8.CE.05 | Chudobaite | (Mg,Zn)5(AsO4)2(HAsO4)2 · 10H2O |
| 8.CE.05 | Geigerite | Mn2+5(AsO4)2(HAsO4)2 · 10H2O |
| 8.CE.10 | Newberyite | Mg(PO3OH) · 3H2O |
| 8.CE.15 | Brassite | Mg(HAsO4) · 4H2O |
| 8.CE.20 | Phosphorrösslerite | Mg(PO3OH) · 7H2O |
| 8.CE.20 | Rösslerite | Mg(HAsO4) · 7H2O |
| 8.CE.25 | Metaswitzerite | Mn2+3(PO4)2 · 4H2O |
| 8.CE.25 | Switzerite | Mn2+3(PO4)2 · 7H2O |
| 8.CE.30 | Lindackerite | CuCu4(AsO4)2(HAsO4)2 · 9H2O |
| 8.CE.30 | Ondrušite | CaCu4(AsO4)2(HAsO4)2 · 10H2O |
| 8.CE.30 | Veselovskýite | ZnCu4(AsO4)2(HAsO4)2 · 9H2O |
| 8.CE.30 | Pradetite | CoCu4(AsO4)2(HAsO4)2 · 9H2O |
| 8.CE.30 | Klajite | MnCu4(AsO4)2(HAsO4)2 · 9-10H2O |
| 8.CE.30 | Hloušekite | (Ni,Co)Cu4(AsO4)2(AsO3OH)2 · 9H2O |
| 8.CE.35 | Bobierrite | Mg3(PO4)2 · 8H2O |
| 8.CE.40 | Annabergite | Ni3(AsO4)2 · 8H2O |
| 8.CE.40 | Arupite | Ni3(PO4)2 · 8H2O |
| 8.CE.40 | Barićite | (Mg,Fe)3(PO4)2 · 8H2O |
| 8.CE.40 | Erythrite | Co3(AsO4)2 · 8H2O |
| 8.CE.40 | Ferrisymplesite | Fe3+3(AsO4)2(OH)3 · 5H2O |
| 8.CE.40 | Hörnesite | Mg3(AsO4)2 · 8H2O |
| 8.CE.40 | Köttigite | Zn3(AsO4)2 · 8H2O |
| 8.CE.40 | Manganohörnesite | Mn2+3(AsO4)2 · 8H2O |
| 8.CE.40 | Parasymplesite | Fe2+3(AsO4)2 · 8H2O |
| 8.CE.40 | Vivianite | Fe2+Fe2+2(PO4)2 · 8H2O |
| 8.CE.40 | Pakhomovskyite | Co3(PO4)2 · 8H2O |
| 8.CE.45 | Symplesite | Fe2+3(AsO4)2 · 8H2O |
| 8.CE.50 | Cattiite | Mg3(PO4)2 · 22H2O |
| 8.CE.60 | Kaňkite | FeAsO4 · 3.5H2O |
| 8.CE.60 | Hilarionite | Fe3+2(SO4)(AsO4)(OH) · 6H2O |
| 8.CE.65 | Steigerite | Al(VO4) · 3H2O |
| 8.CE.70 | Metaschoderite | Al2(PO4)(VO4) · 6H2O |
| 8.CE.70 | Schoderite | Al2(PO4)(VO4) · 8H2O |
| 8.CE.75 | Malhmoodite | FeZr(PO4)2 · 4H2O |
| 8.CE.75 | Zigrasite | MgZr(PO4)2 · 4H2O |
| 8.CE.75 | UM2009-11-PO:CaHZr | CaZr[PO4]2 · 4H2O |
| 8.CE.80 | Santabarbaraite | Fe3+3(PO4)2(OH)3 · 5H2O |
| 8.CE.85 | Metaköttigite | (Zn,Fe,Fe)3(AsO4)2 · 8(H2O,OH) |
| 8.CE.90 | Slavkovite | Cu13(AsO4)6(AsO3OH)4 · 23H2O |
Other Information
Notes:
Readily soluble in hot HCl or HNO3.
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 Koninckite
mindat.org URL:
https://www.mindat.org/min-2249.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Koninckite
Localities for Koninckite
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.
Austria | |
| Pichler (2009) |
| J. Mörtl: Carinthia II 192./112.:329-330 (2002) |
| Brandstätter F. et al. (2015) |
| Gröbner et al. (2008) |
| Bojar (2019) |
| Taucher (2013) |
Belgium (TL) | |
| Cesàro (1884) +6 other references |
Czech Republic | |
| Jirásek +2 other references |
Germany | |
| Weiß (1990) |
| Wittern (2001) |
Hungary | |
| Koch: Minerals of Hungary |
| Szakáll et al. (1996) |
Ireland | |
| Moreton et al. (2005) |
Italy | |
| Senesi F. (Valdicastello Carducci, Lucca) |
Japan | |
| K. Sakurai (1987) +1 other reference |
Kyrgyzstan | |
| Daltry et al. (1994) |
Russia | |
| |
Slovakia | |
| lení Národního muzea v Praze +2 other references |
Spain | |
| Analyzed by XRD by Dr. Joan Vinals (Barcelona) |
| Bareche (2005) | |
| Mineralogistes de Catalunya (1997) |
USA | |
| Van Nostrand Reinholt Press: 313 +3 other references |
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Breitenbuchen, Oberbuchach, Kirchbach, Hermagor District, Carinthia, Austria