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Kohnstein Quarry, Harztor, Nordhausen, Thuringia, Germanyi
Regional Level Types
Kohnstein QuarryQuarry
HarztorMunicipality
NordhausenDistrict
ThuringiaState
GermanyCountry

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Key
Latitude & Longitude (WGS84):
51° 32' 29'' North , 10° 45' 25'' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Niedersachswerfen3,301 (2015)1.2km
Harzungen226 (2018)3.8km
Ilfeld3,134 (2015)4.3km
Petersdorf350 (2015)5.0km
Nordhausen43,912 (2015)5.1km
Name(s) in local language(s):
Steinbruch am Kohnstein, Niedersachswerfen, Nordhausen, Harz, Thüringen, Deutschland


A large, presently (2008) inactive anhydrite quarry, owned by the 'Harzer Anhydrit-Werke' which is part of the Wildgruber Group.
Located near Niedersachswerfen in the southeastern Harz mountains, 6 km NNW of Nordhausen and 3 km SW of Ilfeld.

Known for the occurrence of several rare borates.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


23 valid minerals.

Detailed Mineral List:

Anhydrite
Formula: CaSO4
Reference: Siemroth, J. (2008): Das Vorkommen von Boratmineralien im Werra-Anhydrit des Steinbruchs Kohnstein bei Niedersachswerfen am Südharz, Der Aufschluss, Vol. 59, 353-366
Aragonite
Formula: CaCO3
Reference: personal communication Dr. Thomas Witzke / Aachen university
Calcite
Formula: CaCO3
Reference: Thomas Lühr
Celestine
Formula: SrSO4
Reference: Wittern: "Mineralfundorte in Deutschland", 2001
Epsomite
Formula: MgSO4 · 7H2O
Reference: Siemroth, J. (2008): Das Vorkommen von Boratmineralien im Werra-Anhydrit des Steinbruchs Kohnstein bei Niedersachswerfen am Südharz, Der Aufschluss, Vol. 59, 353-366
Galena
Formula: PbS
Reference: Siemroth, J. (2008): Das Vorkommen von Boratmineralien im Werra-Anhydrit des Steinbruchs Kohnstein bei Niedersachswerfen am Südharz, Der Aufschluss, Vol. 59, 353-366
Gypsum
Formula: CaSO4 · 2H2O
Reference: Wittern: "Mineralfundorte in Deutschland", 2001
Halite
Formula: NaCl
Reference: Siemroth, J. (2008): Das Vorkommen von Boratmineralien im Werra-Anhydrit des Steinbruchs Kohnstein bei Niedersachswerfen am Südharz, Der Aufschluss, Vol. 59, 353-366
Heidornite
Formula: Na2Ca3B5O8(SO4)2Cl(OH)2
Reference: Siemroth, J. (2008): Das Vorkommen von Boratmineralien im Werra-Anhydrit des Steinbruchs Kohnstein bei Niedersachswerfen am Südharz, Der Aufschluss, Vol. 59, 353-366
Howlite
Formula: Ca2B5SiO9(OH)5
Reference: Siemroth, J. (2008): Das Vorkommen von Boratmineralien im Werra-Anhydrit des Steinbruchs Kohnstein bei Niedersachswerfen am Südharz, Der Aufschluss, Vol. 59, 353-366
Hydroboracite
Formula: CaMg[B3O4(OH)3]2 · 3H2O
Habit: Sprays of slender prismatic crystals to several cms
Colour: White
Reference: Siemroth, J. (2008): Das Vorkommen von Boratmineralien im Werra-Anhydrit des Steinbruchs Kohnstein bei Niedersachswerfen am Südharz, Der Aufschluss, Vol. 59, 353-366
Jarandolite
Formula: Ca[B3O4(OH)3]
Reference: S. Weiß: Lapis 29(12):39 (2004)
Marcasite
Formula: FeS2
Reference: personal communication Dr. Thomas Witzke / Aachen university
Polyhalite
Formula: K2Ca2Mg(SO4)4 · 2H2O
Reference: Junker, R. & V. Lüders (2013). Weltklasse-Borate aus dem Anhydrit-Steinbruch Kohnstein, Südharzrand. Mineralien-Welt, vol.24, p.4, S.52-69.
Priceite
Formula: Ca2B5O7(OH)5 · H2O
Reference: Siemroth, J. (2008): Das Vorkommen von Boratmineralien im Werra-Anhydrit des Steinbruchs Kohnstein bei Niedersachswerfen am Südharz, Der Aufschluss, Vol. 59, 353-366
Probertite
Formula: NaCaB5O7(OH)4 · 3H2O
Habit: Colorless elongated crystal
Colour: Colorless
Reference: Siemroth, J. (2008): Das Vorkommen von Boratmineralien im Werra-Anhydrit des Steinbruchs Kohnstein bei Niedersachswerfen am Südharz, Der Aufschluss, Vol. 59, 353-366
Pyrite
Formula: FeS2
Reference: personal communication Dr. Thomas Witzke / Aachen university
Sphalerite
Formula: ZnS
Reference: personal communication Dr. Thomas Witzke / Aachen university
Sphalerite var: Schalenblende
Reference: Philip Bluemner Collection
Strontioginorite
Formula: CaSrB14O20(OH)6 · 5H2O
Reference: Siemroth, J. (2008): Das Vorkommen von Boratmineralien im Werra-Anhydrit des Steinbruchs Kohnstein bei Niedersachswerfen am Südharz, Der Aufschluss, Vol. 59, 353-366
Sulphur
Formula: S8
Reference: Siemroth, J. (2008): Das Vorkommen von Boratmineralien im Werra-Anhydrit des Steinbruchs Kohnstein bei Niedersachswerfen am Südharz, Der Aufschluss, Vol. 59, 353-366
Tuzlaite
Formula: NaCaB5O8(OH)2 · 3H2O
Reference: Siemroth, J. (2008): Das Vorkommen von Boratmineralien im Werra-Anhydrit des Steinbruchs Kohnstein bei Niedersachswerfen am Südharz, Der Aufschluss, Vol. 59, 353-366
Ulexite
Formula: NaCa[B5O6(OH)6] · 5H2O
Reference: Siemroth, J. (2008): Das Vorkommen von Boratmineralien im Werra-Anhydrit des Steinbruchs Kohnstein bei Niedersachswerfen am Südharz, Der Aufschluss, Vol. 59, 353-366
'Veatchite-1M'
Formula: Sr2B11O16(OH)5 · H2O
Reference: Siemroth, J. (2008): Das Vorkommen von Boratmineralien im Werra-Anhydrit des Steinbruchs Kohnstein bei Niedersachswerfen am Südharz, Der Aufschluss, Vol. 59, 353-366
Wurtzite
Formula: (Zn,Fe)S
Reference: Siemroth, J. (2008): Das Vorkommen von Boratmineralien im Werra-Anhydrit des Steinbruchs Kohnstein bei Niedersachswerfen am Südharz, Der Aufschluss, Vol. 59, 353-366

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Sulphur1.CC.05S8
Group 2 - Sulphides and Sulfosalts
Galena2.CD.10PbS
Marcasite2.EB.10aFeS2
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
var: Schalenblende2.CB.05aZnS
Wurtzite2.CB.45(Zn,Fe)S
Group 3 - Halides
Halite3.AA.20NaCl
Group 5 - Nitrates and Carbonates
Aragonite5.AB.15CaCO3
Calcite5.AB.05CaCO3
Group 6 - Borates
Heidornite6.EC.30Na2Ca3B5O8(SO4)2Cl(OH)2
Howlite6.CB.20Ca2B5SiO9(OH)5
Hydroboracite6.CB.15CaMg[B3O4(OH)3]2 · 3H2O
Jarandolite6.CB.25Ca[B3O4(OH)3]
Priceite6.EB.25Ca2B5O7(OH)5 · H2O
Probertite6.EB.15NaCaB5O7(OH)4 · 3H2O
Strontioginorite6.FC.15CaSrB14O20(OH)6 · 5H2O
Tuzlaite6.EC.25NaCaB5O8(OH)2 · 3H2O
Ulexite6.EA.25NaCa[B5O6(OH)6] · 5H2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Anhydrite7.AD.30CaSO4
Celestine7.AD.35SrSO4
Epsomite7.CB.40MgSO4 · 7H2O
Gypsum7.CD.40CaSO4 · 2H2O
Polyhalite7.CC.65K2Ca2Mg(SO4)4 · 2H2O
Unclassified Minerals, Rocks, etc.
'Veatchite-1M'-Sr2B11O16(OH)5 · H2O

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Sulphur1.3.5.1S8
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
Wurtzite2.8.7.1(Zn,Fe)S
AmBnXp, with (m+n):p = 1:2
Marcasite2.12.2.1FeS2
Pyrite2.12.1.1FeS2
Group 9 - NORMAL HALIDES
AX
Halite9.1.1.1NaCl
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 25 - ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
Triborates
Howlite25.3.5.1Ca2B5SiO9(OH)5
Pentaborates
Priceite25.5.1.1Ca2B5O7(OH)5 · H2O
Group 26 - HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
Triborates
Hydroboracite26.3.6.1CaMg[B3O4(OH)3]2 · 3H2O
Pentaborates
Probertite26.5.12.1NaCaB5O7(OH)4 · 3H2O
Tuzlaite26.5.12.2NaCaB5O8(OH)2 · 3H2O
Ulexite26.5.11.1NaCa[B5O6(OH)6] · 5H2O
Hexaborates
Strontioginorite26.6.7.2CaSrB14O20(OH)6 · 5H2O
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Anhydrite28.3.2.1CaSO4
Celestine28.3.1.2SrSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AmBn(XO4)p·xH2O, with (m+n):p < 3:2 and > 1:1
Polyhalite29.4.5.1K2Ca2Mg(SO4)4 · 2H2O
AXO4·xH2O
Epsomite29.6.11.1MgSO4 · 7H2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 32 - COMPOUND SULFATES
Anhydrous Compound Sulfates containing Hydroxyl or Halogen
Heidornite32.3.5.1Na2Ca3B5O8(SO4)2Cl(OH)2
Unclassified Minerals, Mixtures, etc.
Aragonite-CaCO3
Jarandolite-Ca[B3O4(OH)3]
Sphalerite
var: Schalenblende
-ZnS
'Veatchite-1M'-Sr2B11O16(OH)5 · H2O

List of minerals for each chemical element

HHydrogen
H ProbertiteNaCaB5O7(OH)4 · 3H2O
H HydroboraciteCaMg[B3O4(OH)3]2 · 3H2O
H UlexiteNaCa[B5O6(OH)6] · 5H2O
H GypsumCaSO4 · 2H2O
H HeidorniteNa2Ca3B5O8(SO4)2Cl(OH)2
H Veatchite-1MSr2B11O16(OH)5 · H2O
H TuzlaiteNaCaB5O8(OH)2 · 3H2O
H StrontioginoriteCaSrB14O20(OH)6 · 5H2O
H HowliteCa2B5SiO9(OH)5
H JarandoliteCa[B3O4(OH)3]
H PolyhaliteK2Ca2Mg(SO4)4 · 2H2O
H PriceiteCa2B5O7(OH)5 · H2O
H EpsomiteMgSO4 · 7H2O
BBoron
B ProbertiteNaCaB5O7(OH)4 · 3H2O
B HydroboraciteCaMg[B3O4(OH)3]2 · 3H2O
B UlexiteNaCa[B5O6(OH)6] · 5H2O
B HeidorniteNa2Ca3B5O8(SO4)2Cl(OH)2
B Veatchite-1MSr2B11O16(OH)5 · H2O
B TuzlaiteNaCaB5O8(OH)2 · 3H2O
B StrontioginoriteCaSrB14O20(OH)6 · 5H2O
B HowliteCa2B5SiO9(OH)5
B JarandoliteCa[B3O4(OH)3]
B PriceiteCa2B5O7(OH)5 · H2O
CCarbon
C AragoniteCaCO3
C CalciteCaCO3
OOxygen
O ProbertiteNaCaB5O7(OH)4 · 3H2O
O HydroboraciteCaMg[B3O4(OH)3]2 · 3H2O
O UlexiteNaCa[B5O6(OH)6] · 5H2O
O AnhydriteCaSO4
O CelestineSrSO4
O GypsumCaSO4 · 2H2O
O AragoniteCaCO3
O HeidorniteNa2Ca3B5O8(SO4)2Cl(OH)2
O Veatchite-1MSr2B11O16(OH)5 · H2O
O TuzlaiteNaCaB5O8(OH)2 · 3H2O
O StrontioginoriteCaSrB14O20(OH)6 · 5H2O
O HowliteCa2B5SiO9(OH)5
O JarandoliteCa[B3O4(OH)3]
O PolyhaliteK2Ca2Mg(SO4)4 · 2H2O
O PriceiteCa2B5O7(OH)5 · H2O
O EpsomiteMgSO4 · 7H2O
O CalciteCaCO3
NaSodium
Na ProbertiteNaCaB5O7(OH)4 · 3H2O
Na UlexiteNaCa[B5O6(OH)6] · 5H2O
Na HaliteNaCl
Na HeidorniteNa2Ca3B5O8(SO4)2Cl(OH)2
Na TuzlaiteNaCaB5O8(OH)2 · 3H2O
MgMagnesium
Mg HydroboraciteCaMg[B3O4(OH)3]2 · 3H2O
Mg PolyhaliteK2Ca2Mg(SO4)4 · 2H2O
Mg EpsomiteMgSO4 · 7H2O
SiSilicon
Si HowliteCa2B5SiO9(OH)5
SSulfur
S AnhydriteCaSO4
S CelestineSrSO4
S GypsumCaSO4 · 2H2O
S PyriteFeS2
S MarcasiteFeS2
S GalenaPbS
S SphaleriteZnS
S HeidorniteNa2Ca3B5O8(SO4)2Cl(OH)2
S SulphurS8
S PolyhaliteK2Ca2Mg(SO4)4 · 2H2O
S EpsomiteMgSO4 · 7H2O
S Wurtzite(Zn,Fe)S
ClChlorine
Cl HaliteNaCl
Cl HeidorniteNa2Ca3B5O8(SO4)2Cl(OH)2
KPotassium
K PolyhaliteK2Ca2Mg(SO4)4 · 2H2O
CaCalcium
Ca ProbertiteNaCaB5O7(OH)4 · 3H2O
Ca HydroboraciteCaMg[B3O4(OH)3]2 · 3H2O
Ca UlexiteNaCa[B5O6(OH)6] · 5H2O
Ca AnhydriteCaSO4
Ca GypsumCaSO4 · 2H2O
Ca AragoniteCaCO3
Ca HeidorniteNa2Ca3B5O8(SO4)2Cl(OH)2
Ca TuzlaiteNaCaB5O8(OH)2 · 3H2O
Ca StrontioginoriteCaSrB14O20(OH)6 · 5H2O
Ca HowliteCa2B5SiO9(OH)5
Ca JarandoliteCa[B3O4(OH)3]
Ca PolyhaliteK2Ca2Mg(SO4)4 · 2H2O
Ca PriceiteCa2B5O7(OH)5 · H2O
Ca CalciteCaCO3
FeIron
Fe PyriteFeS2
Fe MarcasiteFeS2
ZnZinc
Zn SphaleriteZnS
Zn Wurtzite(Zn,Fe)S
SrStrontium
Sr CelestineSrSO4
Sr Veatchite-1MSr2B11O16(OH)5 · H2O
Sr StrontioginoriteCaSrB14O20(OH)6 · 5H2O
PbLead
Pb GalenaPbS

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
- Siemroth, J. (1992): Die Minerale des Anhydrit-Steinbruches von Niedersachswerfen bei Nordhausen. Lapis 17 (1), 52-55.
- Siemroth, J. (2008): Das Vorkommen von Boratmineralien im Werra-Anhydrit des Steinbruchs Kohnstein bei Niedersachswerfen am Südharz. Der Aufschluss, 59, 353-366.
- Junker, R. & V. Lüders (2013): Weltklasse-Borate aus dem Anhydrit-Steinbruch Kohnstein, Südharzrand. Mineralien-Welt, 24 (4), 52-69.

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