Lonecreekite
A valid IMA mineral species
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About Lonecreekite
Formula:
(NH4)Fe3+(SO4)2 · 12H2O
Colour:
Colorless
Lustre:
Vitreous
Hardness:
2 - 3
Specific Gravity:
1.693
Crystal System:
Isometric
Name:
Named by J.E.J. Martini in 1983 after the type locality of Lone Creek Falls cave, South Africa.
This page provides mineralogical data about Lonecreekite.
Unique Identifiers
Mindat ID:
2430
Long-form identifier:
mindat:1:1:2430:9
GUID
(UUID V4):
(UUID V4):
72270a6b-8b88-49a8-9712-251061b6783b
IMA Classification of Lonecreekite
Approved
First published:
1983
Classification of Lonecreekite
7.CC.20
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
C : With medium-sized and large cations
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
C : With medium-sized and large cations
29.5.5.4
29 : HYDRATED ACID AND NORMAL SULFATES
5 : AB(XO4)2·xH2O
29 : HYDRATED ACID AND NORMAL SULFATES
5 : AB(XO4)2·xH2O
25.11.17
25 : Sulphates
11 : Sulphates of Fe and other metals
25 : Sulphates
11 : Sulphates 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 |
|---|---|---|
| Lck | 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 Lonecreekite
Vitreous
Transparency:
Transparent
Colour:
Colorless
Hardness:
2 - 3 on Mohs scale
Density:
1.693 g/cm3 (Measured) 1.691 g/cm3 (Calculated)
Optical Data of Lonecreekite
Type:
Isotropic
RI values:
n = 1.483
Birefringence:
Isotropic minerals have no birefringence
Surface Relief:
Moderate
Chemistry of Lonecreekite
Mindat Formula:
(NH4)Fe3+(SO4)2 · 12H2O
Crystallography of Lonecreekite
Crystal System:
Isometric
Class (H-M):
m3 (2/m 3) - Diploidal
Space Group:
Pa3
Setting:
Pa3
Cell Parameters:
a = 12.302 Å
Unit Cell V:
1,861.77 ų (Calculated from Unit Cell)
Z:
4
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.356 Å | (100) |
| 7.12 Å | (70) |
| 3.289 Å | (65) |
| 4.107 Å | (60) |
| 5.505 Å | (50) |
| 5.027 Å | (25) |
| 1.945 Å | (20) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 45a : [Sulfates, arsenates, selenates, antimonates] | |
| 45b : [Other oxidized fumarolic minerals] | |
| 47a : [Near-surface hydration of prior minerals] | |
| 47b : [Sulfates and sulfites] | |
| Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
| 53 : Other minerals with taphonomic origins | <0.4 |
Type Occurrence of Lonecreekite
General Appearance of Type Material:
Xenomorphic crystals, to 0.1 mm,
Place of Conservation of Type Material:
South African Geological Survey Museum, Pretoria, South Africa, LCH002.
Geological Setting of Type Material:
Ceiling of a cave
Associated Minerals at Type Locality:
Reference:
Martini, J.E.J. (1984) Lonecreekite, sabieite, and clairite, new secondary ammonium ferric-iron sulfates from Lone Creek Fall cave, near Sabie, eastern Transvaal. Annals of the Geological Survey (South Africa): 17: 29-34.
Synonyms of Lonecreekite
Other Language Names for Lonecreekite
Common Associates
Associated Minerals Based on Photo Data:
| 1 photo of Lonecreekite associated with Anatase | TiO2 |
| 1 photo of Lonecreekite associated with Boussingaultite | (NH4)2Mg(SO4)2 · 6H2O |
| 1 photo of Lonecreekite associated with Efremovite | (NH4)2Mg2(SO4)3 |
| 1 photo of Lonecreekite associated with Sabieite | (NH4)Fe3+(SO4)2 |
| 1 photo of Lonecreekite associated with Chabazite-K | (K2,Ca,Na2,Sr,Mg)2[Al2Si4O12]2 · 12H2O |
| 1 photo of Lonecreekite associated with Quartz | SiO2 |
| 1 photo of Lonecreekite associated with Tschermigite | (NH4)Al(SO4)2 · 12H2O |
| 1 photo of Lonecreekite associated with Copiapite | Fe2+Fe3+4(SO4)6(OH)2 · 20H2O |
Related Minerals - Strunz-mindat Grouping
| 7.CC. | Cobaltoblödite | Na2Co(SO4)2 · 4H2O |
| 7.CC. | Andychristyite | PbCu2+Te6+O5(H2O) |
| 7.CC. | Ammoniovoltaite | (NH4)2Fe2+5Fe3+3Al(SO4)12(H2O)18 |
| 7.CC.05 | Krausite | KFe(SO4)2 · H2O |
| 7.CC.10 | Tamarugite | NaAl(SO4)2 · 6H2O |
| 7.CC.15 | Kalinite | KAl(SO4)2 · 11H2O |
| 7.CC.15 | Mendozite | NaAl(SO4)2 · 11H2O |
| 7.CC.20 | Alum-(K) | KAl(SO4)2 · 12H2O |
| 7.CC.20 | Alum-(Na) | NaAl(SO4)2 · 12H2O |
| 7.CC.20 | Tschermigite | (NH4)Al(SO4)2 · 12H2O |
| 7.CC.20 | Lanmuchangite | Tl+Al(SO4)2 · 12H2O |
| 7.CC.25 | Voltaite | K2Fe2+5Fe3+3Al(SO4)12 · 18H2O |
| 7.CC.25 | Zincovoltaite | K2Zn5Fe3+3Al(SO4)12 · 18H2O |
| 7.CC.25 | Pertlikite | K2(Fe2+,Mg)2Mg4Fe3+2Al(SO4)12 · 18H2O |
| 7.CC.25 | Ammoniomagnesiovoltaite | (NH4)2Mg2+5Fe3+3Al(SO4)12 · 18H2O |
| 7.CC.25 | Magnesiovoltaite | K2Mg5Fe3+3Al(SO4)12 · 18H2O |
| 7.CC.30 | Kröhnkite | Na2Cu(SO4)2 · 2H2O |
| 7.CC.35 | Ferrinatrite | Na3Fe(SO4)3 · 3H2O |
| 7.CC.40 | Goldichite | KFe(SO4)2 · 4H2O |
| 7.CC.45 | Löweite | Na12Mg7(SO4)13 · 15H2O |
| 7.CC.50 | Blödite | Na2Mg(SO4)2 · 4H2O |
| 7.CC.50 | Nickelblödite | Na2(Ni,Mg)(SO4)2 · 4H2O |
| 7.CC.50 | Changoite | Na2Zn(SO4)2 · 4H2O |
| 7.CC.55 | Leonite | K2Mg(SO4)2 · 4H2O |
| 7.CC.55 | Mereiterite | K2Fe(SO4)2 · 4H2O |
| 7.CC.60 | Boussingaultite | (NH4)2Mg(SO4)2 · 6H2O |
| 7.CC.60 | Cyanochroite | K2Cu(SO4)2 · 6H2O |
| 7.CC.60 | Mohrite | (NH4)2Fe(SO4)2 · 6H2O |
| 7.CC.60 | Nickelboussingaultite | (NH4)2Ni(SO4)2 · 6H2O |
| 7.CC.60 | Picromerite | K2Mg(SO4)2 · 6H2O |
| 7.CC.60 | Nickelpicromerite | K2Ni(SO4)2 · 6H2O |
| 7.CC.60 | Katerinopoulosite | (NH4)2Zn(SO4)2 · 6H2O |
| 7.CC.65 | Polyhalite | K2Ca2Mg(SO4)4 · 2H2O |
| 7.CC.70 | Leightonite | K2Ca2Cu(SO4)4 · 2H2O |
| 7.CC.75 | Amarillite | NaFe(SO4)2 · 6H2O |
| 7.CC.80 | Konyaite | Na2Mg(SO4)2 · 5H2O |
| 7.CC.85 | Wattevilleite | Na2Ca(SO4)2 · 4H2O (?) |
| 7.CC.85 | Xocolatlite | Ca2Mn4+2(Te6+O6)2 · H2O |
| 7.CC.90 | Eckhardite | (Ca,Pb)Cu2+Te6+O5(H2O) |
Other Information
Notes:
Soluble in H2O, leaving brown Fe(OH)3.
Dehydrates to sabieite.
Dehydrates to sabieite.
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 Lonecreekite
mindat.org URL:
https://www.mindat.org/min-2430.html
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References for Lonecreekite
Reference List:
Localities for Lonecreekite
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.
Belgium | |
| Leduc et al. (2012) |
Chile | |
| Shannon & Sons Listing |
Czech Republic | |
| Zacek et al. (2019) |
Germany | |
| Mangold et al. (11/21) |
Hungary | |
| XRD - Sándor Szakáll |
Kenya | |
| Bowell et al. (1996) |
Russia | |
| Zhitova et al. (2022) |
South Africa (TL) | |
| Martini (1983) |
USA | |
| Sorrell (n.d.) |
| Tankersley et al. (2016) |
| Carlson (2010) +1 other reference |
Venezuela | |
| Franco Urbani (2009) |
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Kladno mine, Libušin, Kladno District, Central Bohemian Region, Czech Republic