Kornelite
A valid IMA mineral species - grandfathered
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About Kornelite
Formula:
Fe2(SO4)3 · 7H2O
Colour:
Pale rose pink to violet.
Lustre:
Silky
Specific Gravity:
2.306
Crystal System:
Monoclinic
Name:
For Kornel Hlavacsek (1835-1914), Hungarian mining engineer at the pyrite mines, Banska Stavnica, Slovakia.
Type Locality:
This page provides mineralogical data about Kornelite.
Unique Identifiers
Mindat ID:
2253
Long-form identifier:
mindat:1:1:2253:4
GUID
(UUID V4):
(UUID V4):
453f6794-85f4-4517-9a74-6f52b6693ce7
IMA Classification of Kornelite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Fe3+2(SO4)3 · 7H2O (?)
First published:
1888
Type description reference:
Classification of Kornelite
7.CB.60
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
B : With only medium-sized cations
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
B : With only medium-sized cations
29.8.2.1
29 : HYDRATED ACID AND NORMAL SULFATES
8 : A2(XO4)3·H2O
29 : HYDRATED ACID AND NORMAL SULFATES
8 : A2(XO4)3·H2O
25.10.8
25 : Sulphates
10 : Sulphates of Fe alone
25 : Sulphates
10 : Sulphates of Fe alone
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 |
---|---|---|
Knl | 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 Kornelite
Silky
Transparency:
Transparent
Comment:
If fibrous
Colour:
Pale rose pink to violet.
Streak:
White
Cleavage:
Distinct/Good
On {100}
On {100}
Density:
2.306 g/cm3 (Measured) 2.254 g/cm3 (Calculated)
Optical Data of Kornelite
Type:
Biaxial (+)
RI values:
nα = 1.572 nβ = 1.586 nγ = 1.640
2V:
Measured: 49° to 62°, Calculated: 56°
Max Birefringence:
δ = 0.068
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:
very weak r>v
Chemistry of Kornelite
Mindat Formula:
Fe2(SO4)3 · 7H2O
Elements listed:
Crystallography of Kornelite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Cell Parameters:
a = 14.3(1) Å, b = 20.12(2) Å, c = 5.425(4) Å
β = 96.8(1)°
β = 96.8(1)°
Ratio:
a:b:c = 0.711 : 1 : 0.27
Unit Cell V:
1,549.88 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Crystals lath-like {010} and acicular [001]. Crusts, tufted aggregates, globular masses with a radial-fibrous structure.
Twinning:
Polysynthetic on {100}.
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) |
---|---|---|---|---|---|---|---|
0000322 | Kornelite | Robinson P D, Fang J H (1973) Crystal structures and mineral chemistry of hydrated ferric sulphates. III. The crystal structure of kornelite American Mineralogist 58 535-539 | 1973 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
10.0 Å | (FFF) |
6.64 Å | (FF) |
4.67 Å | (FF) |
4.30 Å | (F) |
3.14 Å | (F) |
4.39 Å | (mF) |
3.50 Å | (mF) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47b : [Sulfates and sulfites] | |
Stage 10b: Anthropogenic minerals | <10 Ka |
55 : Anthropogenic mine minerals |
Type Occurrence of Kornelite
Place of Conservation of Type Material:
Natural History Museum, Budapest, Hungary. Type specimen destroyed 1956, topotypes remain.
Geological Setting of Type Material:
Weathering product in a pyrite mine
Associated Minerals at Type Locality:
Reference:
Krenner, J. (1888) Huszonötödik akadémiai ülés. Magyar Tudományos Akadémia Értesítöje: 22: 131-131.
Other Language Names for Kornelite
Common Associates
Associated Minerals Based on Photo Data:
2 photos of Kornelite associated with Copiapite | Fe2+Fe3+4(SO4)6(OH)2 · 20H2O |
2 photos of Kornelite associated with Szomolnokite | FeSO4 · H2O |
1 photo of Kornelite associated with Paracoquimbite | Fe4(SO4)6(H2O)12 · 6H2O |
1 photo of Kornelite associated with Jarosite | KFe3+3(SO4)2(OH)6 |
1 photo of Kornelite associated with Römerite | Fe2+Fe3+2(SO4)4 · 14H2O |
1 photo of Kornelite associated with Coquimbite | AlFe3(SO4)6(H2O)12 · 6H2O |
Related Minerals - Strunz-mindat Grouping
7.CB. | Sarvodaite | Al2(SO4)3 · 5H2O |
7.CB.02 | Voudourisite | CdSO4 · H2O |
7.CB.05 | Dwornikite | Ni(SO4) · H2O |
7.CB.05 | Gunningite | ZnSO4 · H2O |
7.CB.05 | Kieserite | MgSO4 · H2O |
7.CB.05 | Poitevinite | (Cu,Fe)SO4 · H2O |
7.CB.05 | Szmikite | MnSO4 · H2O |
7.CB.05 | Szomolnokite | FeSO4 · H2O |
7.CB.05 | Cobaltkieserite | CoSO4 · H2O |
7.CB.07 | Sanderite | MgSO4 · 2H2O |
7.CB.10 | Bonattite | CuSO4 · 3H2O |
7.CB.12 | Belogubite | CuZn(SO4)2 · 10H2O |
7.CB.15 | Aplowite | (Co,Mn,Ni)SO4 · 4H2O |
7.CB.15 | Boyleite | (Zn,Mg)SO4 · 4H2O |
7.CB.15 | Ilesite | (Mn,Zn,Fe)SO4 · 4H2O |
7.CB.15 | Rozenite | FeSO4 · 4H2O |
7.CB.15 | Starkeyite | MgSO4 · 4H2O |
7.CB.15 | Drobecite | CdSO4 · 4H2O |
7.CB.15 | Cranswickite | MgSO4 · 4H2O |
7.CB.20 | Chalcanthite | CuSO4 · 5H2O |
7.CB.20 | Jôkokuite | MnSO4 · 5H2O |
7.CB.20 | Pentahydrite | MgSO4 · 5H2O |
7.CB.20 | Siderotil | FeSO4 · 5H2O |
7.CB.25 | Bianchite | Zn(SO4) · 6H2O |
7.CB.25 | Chvaleticeite | Mn(SO4) · 6H2O |
7.CB.25 | Ferrohexahydrite | FeSO4 · 6H2O |
7.CB.25 | Hexahydrite | MgSO4 · 6H2O |
7.CB.25 | Moorhouseite | Co(SO4) · 6H2O |
7.CB.25 | Nickelhexahydrite | Ni(SO4) · 6H2O |
7.CB.30 | Retgersite | NiSO4 · 6H2O |
7.CB.35 | Bieberite | CoSO4 · 7H2O |
7.CB.35 | Boothite | CuSO4 · 7H2O |
7.CB.35 | Mallardite | MnSO4 · 7H2O |
7.CB.35 | Melanterite | Fe2+(H2O)6SO4 · H2O |
7.CB.35 | Zincmelanterite | (Zn,Cu,Fe)SO4 · 7H2O |
7.CB.35 | Alpersite | (Mg,Cu)(SO4) · 7H2O |
7.CB.40 | Epsomite | MgSO4 · 7H2O |
7.CB.40 | Goslarite | ZnSO4 · 7H2O |
7.CB.40 | Morenosite | NiSO4 · 7H2O |
7.CB.45 | Alunogen | Al2(SO4)3 · 17H2O |
7.CB.45 | Meta-alunogen | Al2(SO4)3 · 12H2O |
7.CB.50 | Aluminocoquimbite | Al2Fe2(SO4)6(H2O)12 · 6H2O |
7.CB.50 | Lazaridisite | 3CdSO4 · 8H2O |
7.CB.52 | Pararaisaite | CuMg[Te6+O4(OH)2] · 6H2O |
7.CB.55 | Coquimbite | AlFe3(SO4)6(H2O)12 · 6H2O |
7.CB.55 | Paracoquimbite | Fe4(SO4)6(H2O)12 · 6H2O |
7.CB.55 | Rhomboclase | (H5O2)Fe3+(SO4)2 · 2H2O |
7.CB.55 | Raisaite | CuMg[Te6+O4(OH)2] · 6H2O |
7.CB.57 | Caichengyunite | Fe2+3Al2(SO4)6 · 30H2O |
7.CB.65 | Quenstedtite | Fe2(SO4)3 · 11H2O |
7.CB.70 | Lausenite | Fe2(SO4)3 · 5H2O |
7.CB.75 | Lishizhenite | ZnFe2(SO4)4 · 14H2O |
7.CB.75 | Römerite | Fe2+Fe3+2(SO4)4 · 14H2O |
7.CB.80 | Ransomite | CuFe2(SO4)4 · 6H2O |
7.CB.85 | Apjohnite | Mn2+Al2(SO4)4 · 22H2O |
7.CB.85 | Bílinite | Fe2+Fe3+2(SO4)4 · 22H2O |
7.CB.85 | Dietrichite | (Zn,Fe2+,Mn2+)Al2(SO4)4 · 22H2O |
7.CB.85 | Halotrichite | FeAl2(SO4)4 · 22H2O |
7.CB.85 | Pickeringite | MgAl2(SO4)4 · 22H2O |
7.CB.85 | Redingtonite | (Fe2+,Mg,Ni)(Cr,Al)2(SO4)4 · 22H2O |
7.CB.85 | Wupatkiite | (Co,Mg,Ni)Al2(SO4)4 · 22H2O |
7.CB.90 | Meridianiite | MgSO4 · 11H2O |
Other Information
Notes:
Water soluble
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 Kornelite
mindat.org URL:
https://www.mindat.org/min-2253.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Kornelite
Reference List:
Merwin, H. E., F.Posnjak, (1937) Sulphate incrustations in the Copper Queen Mine, Bisbee, Arizona. American Mineralogist, 22 (5) 567-571
Cesbron, Fabien (1964) Contribution à la Minéralogie des sulfates de fer hydratés. Bulletin de Minéralogie, 87 (2) 125-143 doi:10.3406/bulmi.1964.5721
Localities for Kornelite
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).
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.
All localities listed without proper references should be considered as questionable.
Australia | |
| Sielecki (1988) |
Sielecki (1988) | |
| R Bottrill |
Chile | |
| XRD and Wet Chemical by Gerhard Möhn |
Germany | |
| Walenta (1992) |
Greece | |
| Wendel et al. (1999) |
Branko Rieck collection | |
| Branko Rieck collection |
Iran | |
| Khorasanipour et al. (2011) |
Japan | |
| Miura et al. (1994) |
Slovakia (TL) | |
| Palache et al. (1951) +1 other reference |
Spain | |
| Calvo (1999) |
USA | |
| Anthony et al. (1995) |
| Merwin et al. (1937) +3 other references |
| Van Nostrand Reinholt Press: 273 +1 other reference |
| |
| Anthony et al. (2016) |
Van Nostrand Reinholt Press: 273. +1 other reference | |
www.mineralsocal.org | |
Hasenmueller et al. (2005, March) | |
| Mineralogical Record: 17:315 |
| Majzlan et al. (2011) |
| Van Loan et al. (1959) +1 other reference |
| Min News 6:8 p3 |
Schindler et al. (2003) | |
| Patrick Haynes. ID via the late Howard ... |
| Palache et al. (1951) +1 other reference |
| Dietrich (1990) |
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