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Latitude & Longitude (WGS84):
47° 3' 16'' North , 15° 9' 23'' East
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Voitsberg9,403 (2018)1.2km
Rosental an der Kainach1,678 (2018)2.6km
Bärnbach4,178 (2018)2.8km
Aichegg440 (2018)3.3km
Gasselberg256 (2018)4.1km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Vereinigung der Leobener MineralienfreundeSt. Marein-Feistritz, Styria31km
Mindat Locality ID:
57905
Long-form identifier:
mindat:1:2:57905:3
GUID (UUID V4):
0
Name(s) in local language(s):
Muttlkogel, Zangtaler Revier, Braunkohlelagerstätte Köflach - Voitsberg, Köflach, Steiermark, Österreich


Secondary minerals resulting from a formerly burning coal seam.

Summary of Walter & Postl (1983):

"Recently some rare sulfates could be found beside α-sulfur in an area of pyroschists during exploratory work at the Muttlkogel in the coal district of Zangtal near Voitsberg, Styria, Austria. Ammoniojarosite, NH4Fe33+(OH)6(S04)2 and voltaite, K2Fe52+Fe33+Al(SO4)12.18H2O, were studied in detail. The results of X-ray and IR-spectroscopical studies are given."

Note on the mineral list: Walter and Postl (1983) also report "white extremely small/thin acicular crystals whose identity could not be determined because of the small size of the available sample."

GPS coordinates are currently provisionally set to the "Ehemaliger Bergbau Zangtal" ("Former Zangtal Mine").

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


15 valid minerals.

Rock Types Recorded


Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ 'Alum Group'
Formula: XAl(SO4)2 · 12H2O
Description: mixed crystals of alum-k ("Kalialaun") and tschermigite ("Ammonalaun").
ⓘ Alunogen
Formula: Al2(SO4)3 · 17H2O
ⓘ Ammoniojarosite
Formula: (NH4)Fe3+3(SO4)2(OH)6
Habit: groups or tufts of lustrous crystals; powdery
Colour: yellow-brown
Description: First found in 1981 by a Mr. F. Arthofer from Voitsberg (Postl, 1982). Found growing on lignite ("Braunkohle"), sulphur and/or gypsum.
ⓘ Anorthite
Formula: Ca(Al2Si2O8)
ⓘ Baryte
Formula: BaSO4
ⓘ Copiapite
Formula: Fe2+Fe3+4(SO4)6(OH)2 · 20H2O
Habit: platelets
Colour: yellowish
ⓘ Goethite
Formula: Fe3+O(OH)
ⓘ Gypsum
Formula: CaSO4 · 2H2O
ⓘ Halotrichite
Formula: Fe2+Al2(SO4)4 · 22H2O
ⓘ Mullite
Formula: Al4+2xSi2-2xO10-x
ⓘ Native Sulphur
Formula: S8
ⓘ Römerite
Formula: Fe2+Fe3+2(SO4)4 · 14H2O
ⓘ Rozenite
Formula: FeSO4 · 4H2O
ⓘ Salammoniac
Formula: NH4Cl
ⓘ Vivianite
Formula: Fe2+Fe2+2(PO4)2 · 8H2O
ⓘ Voltaite
Formula: K2Fe2+5Fe3+3Al(SO4)12 · 18H2O
Habit: combinations of octahedra with cubes and rhombododecahedra
Colour: black
Description: Crystals up to 0.5mm.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Sulphur1.CC.05S8
Group 3 - Halides
ⓘSalammoniac3.AA.25NH4Cl
Group 4 - Oxides and Hydroxides
ⓘGoethite4.FD.10Fe3+O(OH)
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4
ⓘAmmoniojarosite7.BC.10(NH4)Fe3+3(SO4)2(OH)6
ⓘRozenite7.CB.15FeSO4 · 4H2O
ⓘAlunogen7.CB.45Al2(SO4)3 · 17H2O
ⓘRömerite7.CB.75Fe2+Fe3+2(SO4)4 · 14H2O
ⓘHalotrichite7.CB.85Fe2+Al2(SO4)4 · 22H2O
ⓘVoltaite7.CC.25K2Fe2+5Fe3+3Al(SO4)12 · 18H2O
ⓘGypsum7.CD.40CaSO4 · 2H2O
ⓘCopiapite7.DB.35Fe2+Fe3+4(SO4)6(OH)2 · 20H2O
Group 8 - Phosphates, Arsenates and Vanadates
ⓘVivianite8.CE.40Fe2+Fe2+2(PO4)2 · 8H2O
Group 9 - Silicates
ⓘMullite9.AF.20Al4+2xSi2-2xO10-x
ⓘAnorthite9.FA.35Ca(Al2Si2O8)
Unclassified
ⓘ'Alum Group'-XAl(SO4)2 · 12H2O

List of minerals for each chemical element

HHydrogen
Hⓘ Alum GroupXAl(SO4)2 · 12H2O
Hⓘ AlunogenAl2(SO4)3 · 17H2O
Hⓘ Ammoniojarosite(NH4)Fe33+(SO4)2(OH)6
Hⓘ CopiapiteFe2+Fe43+(SO4)6(OH)2 · 20H2O
Hⓘ GoethiteFe3+O(OH)
Hⓘ GypsumCaSO4 · 2H2O
Hⓘ HalotrichiteFe2+Al2(SO4)4 · 22H2O
Hⓘ RömeriteFe2+Fe23+(SO4)4 · 14H2O
Hⓘ RozeniteFeSO4 · 4H2O
Hⓘ SalammoniacNH4Cl
Hⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
Hⓘ VoltaiteK2Fe52+Fe33+Al(SO4)12 · 18H2O
NNitrogen
Nⓘ Ammoniojarosite(NH4)Fe33+(SO4)2(OH)6
Nⓘ SalammoniacNH4Cl
OOxygen
Oⓘ Alum GroupXAl(SO4)2 · 12H2O
Oⓘ AlunogenAl2(SO4)3 · 17H2O
Oⓘ Ammoniojarosite(NH4)Fe33+(SO4)2(OH)6
Oⓘ AnorthiteCa(Al2Si2O8)
Oⓘ BaryteBaSO4
Oⓘ CopiapiteFe2+Fe43+(SO4)6(OH)2 · 20H2O
Oⓘ GoethiteFe3+O(OH)
Oⓘ GypsumCaSO4 · 2H2O
Oⓘ HalotrichiteFe2+Al2(SO4)4 · 22H2O
Oⓘ MulliteAl4+2xSi2-2xO10-x
Oⓘ RömeriteFe2+Fe23+(SO4)4 · 14H2O
Oⓘ RozeniteFeSO4 · 4H2O
Oⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
Oⓘ VoltaiteK2Fe52+Fe33+Al(SO4)12 · 18H2O
AlAluminium
Alⓘ Alum GroupXAl(SO4)2 · 12H2O
Alⓘ AlunogenAl2(SO4)3 · 17H2O
Alⓘ AnorthiteCa(Al2Si2O8)
Alⓘ HalotrichiteFe2+Al2(SO4)4 · 22H2O
Alⓘ MulliteAl4+2xSi2-2xO10-x
Alⓘ VoltaiteK2Fe52+Fe33+Al(SO4)12 · 18H2O
SiSilicon
Siⓘ AnorthiteCa(Al2Si2O8)
Siⓘ MulliteAl4+2xSi2-2xO10-x
PPhosphorus
Pⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
SSulfur
Sⓘ Alum GroupXAl(SO4)2 · 12H2O
Sⓘ AlunogenAl2(SO4)3 · 17H2O
Sⓘ Ammoniojarosite(NH4)Fe33+(SO4)2(OH)6
Sⓘ BaryteBaSO4
Sⓘ CopiapiteFe2+Fe43+(SO4)6(OH)2 · 20H2O
Sⓘ GypsumCaSO4 · 2H2O
Sⓘ HalotrichiteFe2+Al2(SO4)4 · 22H2O
Sⓘ RömeriteFe2+Fe23+(SO4)4 · 14H2O
Sⓘ RozeniteFeSO4 · 4H2O
Sⓘ Native SulphurS8
Sⓘ VoltaiteK2Fe52+Fe33+Al(SO4)12 · 18H2O
ClChlorine
Clⓘ SalammoniacNH4Cl
KPotassium
Kⓘ VoltaiteK2Fe52+Fe33+Al(SO4)12 · 18H2O
CaCalcium
Caⓘ AnorthiteCa(Al2Si2O8)
Caⓘ GypsumCaSO4 · 2H2O
FeIron
Feⓘ Ammoniojarosite(NH4)Fe33+(SO4)2(OH)6
Feⓘ CopiapiteFe2+Fe43+(SO4)6(OH)2 · 20H2O
Feⓘ GoethiteFe3+O(OH)
Feⓘ HalotrichiteFe2+Al2(SO4)4 · 22H2O
Feⓘ RömeriteFe2+Fe23+(SO4)4 · 14H2O
Feⓘ RozeniteFeSO4 · 4H2O
Feⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
Feⓘ VoltaiteK2Fe52+Fe33+Al(SO4)12 · 18H2O
BaBarium
Baⓘ BaryteBaSO4

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
EuropeContinent

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