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Silberhardt Mine, Öttershagen, Windeck, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germanyi
Regional Level Types
Silberhardt MineMine (Tourist Attraction)
Öttershagen- not defined -
WindeckMunicipality
Rhein-Sieg-KreisDistrict
CologneAdministrative District
North Rhine-WestphaliaState
GermanyCountry

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Latitude & Longitude (WGS84):
50° 49' 23'' North , 7° 38' 31'' East
Latitude & Longitude (decimal):
Type:
Mine (Tourist Attraction) - last checked 2023
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Forst634 (2011)3.9km
Bitzen829 (2016)3.9km
Fürthen1,276 (2015)4.8km
Etzbach1,289 (2017)5.9km
Waldbröl19,533 (2015)6.1km
Mindat Locality ID:
158010
Long-form identifier:
mindat:1:2:158010:8
GUID (UUID V4):
0
Name(s) in local language(s):
Grube Silberhardt, Öttershagen, Windeck, Bergisches Land, Nordrhein-Westfalen, Deutschland


The ore body is a typical mixture of predominantly siderite with veins of galenite, sphalerite and minor amounts of chalcopyrite typically formed during the later phases of the Variscan orogeny. The base rock consists of schists and siltstone from the Lower Devonian (upper Siegen). Quarz-bearing intrusions are rather rare.

Ancient mining for silver-bearing galena and lead started in the 15th century. However, mining activities in the area are recorded as early as the 13th century.
In the 19th century the mine re-worked the mining dumps to exploit the zinc-ore (sphalerite). Between 1920 and 1925 a last attempt was started to mine for iron-ore (siderite - "Spateisen"). The success was very limited and eventually the mine was closed on 4 November 1925.

The old "upper adit" was re-opened beginning in 1997 and finally the mine opened as a tourist mine in 1999. Additionally a mining trail was established in 2001.
In 2011 a new visitor center was opened presenting a collection of local minerals and mining artefacts. More info can be found here => https://www.grube-silberhardt.de/ (web page is in German language only).

Besides the now open old "upper adit", several deeper levels are documented down to the 156 m-level. But there is also a higher level which is likely the oldest part of the mine.

The old dumps from the active mining area were removed or used as filling material in the surrounding area in the decades after closure.
Almost all material produced during the re-opening was also removed and used for road-works.
There are no known specimens in collections coming from the active production period. All minerals shown here were found in the museum's repository with material coming from the re-opening works.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


20 valid minerals.

Detailed Mineral List:

Anglesite
Formula: PbSO4
References:
Remmert, Marc (2023) Personal Communication. Identified by Marc Remmert: Visual Identification
Bornite
Formula: Cu5FeS4
References:
Remmert, Marc (2023) Personal Communication. Identified by Marc Remmert: Visual Identification
Brochantite
Formula: Cu4(SO4)(OH)6
References:
Remmert, Marc (2023) Personal Communication. Identified by Marc Remmert: Visual Identification
Cerussite
Formula: PbCO3
References:
Remmert, Marc (2023) Personal Communication. Identified by Marc Remmert: Visual Identification
Chalcopyrite
Formula: CuFeS2
References:
Remmert, Marc (2023) Personal Communication. Identified by Marc Remmert: Visual Identification
Cuprite
Formula: Cu2O
References:
Remmert, Marc (2023) Personal Communication. Identified by Marc Remmert: Visual Identification
Erythrite
Formula: Co3(AsO4)2 · 8H2O
References:
Remmert, Marc (2023) Personal Communication. Identified by Marc Remmert: Visual Identification
Galena
Formula: PbS
Goethite
Formula: Fe3+O(OH)
References:
Remmert, Marc (2023) Personal Communication. Identified by Marc Remmert: Visual Identification
Katerinopoulosite
Formula: (NH4)2Zn(SO4)2 · 6H2O
Description: Colourless to white transparent groups intergrown with green ktenasite. The overall appearance is pale green. The EDS data shows Zn dominance, with some amounts of Cu and minor Mg on the cation site. Ammonium is confirmed by the presence of significant ammounts nitrogen in the EDS data. The analyzed specimen was found on sample rocks which where collected during the reopening of the adit. These rocks where stored almost 20 years before Sigi Hupfer had the opportunity to check these and forwarded samples to Joy Desor for analysis. It is highly likely that the mineral was formed as a result of alteration resp. decaying ore on the sample rock in association with partially high humidity. This is is confirmed by the identification of highly soluble Pentahydrit in 2024, also on rock samples stored for many years. Considering the high solubility in water of this mineral and knowing the situation in the adit it becomes clear that the formation cannot had happened underground, hence ist occurence might be considered as "artificial" or "human induced" (comparable to minerals found in slags). Publications in the local press about the "sensational find of Katerinopoulosit" stated an occurence inside the adit. This is either a wrong or misunderstood statement of the person being interviewed (see: https://www.rundschau-online.de/region/rhein-sieg/eitorf-windeck/windeck-forscher-finden-seltenes-mineral-in-grube-silberhardt-382197)
Ktenasite
Formula: ZnCu4(SO4)2(OH)6 · 6H2O
Lepidocrocite
Formula: Fe3+O(OH)
References:
Remmert, Marc (2023) Personal Communication. Identified by Marc Remmert: Visual Identification
Linarite
Formula: PbCu(SO4)(OH)2
References:
Remmert, Marc (2023) Personal Communication. Identified by Marc Remmert: Visual Identification
Malachite
Formula: Cu2(CO3)(OH)2
References:
Remmert, Marc (2023) Personal Communication. Identified by Marc Remmert: Visual Identification
Native Copper
Formula: Cu
References:
Remmert, Marc (2023) Personal Communication. Identified by Marc Remmert: Visual Identification
Parasymplesite
Formula: Fe2+3(AsO4)2 · 8H2O
Pyrite
Formula: FeS2
References:
Remmert, Marc (2023) Personal Communication. Identified by Marc Remmert: Visual Identification
Pyromorphite
Formula: Pb5(PO4)3Cl
References:
Remmert, Marc (2023) Personal Communication. Identified by Marc Remmert: Visual Identification
Schulenbergite
Formula: (Cu,Zn)7(SO4)2(OH)10 · 3H2O
Siderite
Formula: FeCO3
References:
Remmert, Marc (2023) Personal Communication. Identified by Marc Remmert: Visual Identification

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Native Copper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Goethite4.00.Fe3+O(OH)
Cuprite4.AA.10Cu2O
Lepidocrocite4.FE.15Fe3+O(OH)
Group 5 - Nitrates and Carbonates
Siderite5.AB.05FeCO3
Cerussite5.AB.15PbCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Anglesite7.AD.35PbSO4
Brochantite7.BB.25Cu4(SO4)(OH)6
Linarite7.BC.65PbCu(SO4)(OH)2
Katerinopoulosite7.CC.60(NH4)2Zn(SO4)2 · 6H2O
Ktenasite7.DD.20ZnCu4(SO4)2(OH)6 · 6H2O
Schulenbergite7.DD.80(Cu,Zn)7(SO4)2(OH)10 · 3H2O
Group 8 - Phosphates, Arsenates and Vanadates
Pyromorphite8.BN.05Pb5(PO4)3Cl
Erythrite8.CE.40Co3(AsO4)2 · 8H2O
Parasymplesite8.CE.40Fe2+3(AsO4)2 · 8H2O

List of minerals for each chemical element

HHydrogen
H BrochantiteCu4(SO4)(OH)6
H ErythriteCo3(AsO4)2 · 8H2O
H GoethiteFe3+O(OH)
H KtenasiteZnCu4(SO4)2(OH)6 · 6H2O
H LepidocrociteFe3+O(OH)
H LinaritePbCu(SO4)(OH)2
H MalachiteCu2(CO3)(OH)2
H ParasymplesiteFe32+(AsO4)2 · 8H2O
H Schulenbergite(Cu,Zn)7(SO4)2(OH)10 · 3H2O
H Katerinopoulosite(NH4)2Zn(SO4)2 · 6H2O
CCarbon
C CerussitePbCO3
C MalachiteCu2(CO3)(OH)2
C SideriteFeCO3
NNitrogen
N Katerinopoulosite(NH4)2Zn(SO4)2 · 6H2O
OOxygen
O AnglesitePbSO4
O BrochantiteCu4(SO4)(OH)6
O CerussitePbCO3
O CupriteCu2O
O ErythriteCo3(AsO4)2 · 8H2O
O GoethiteFe3+O(OH)
O KtenasiteZnCu4(SO4)2(OH)6 · 6H2O
O LepidocrociteFe3+O(OH)
O LinaritePbCu(SO4)(OH)2
O MalachiteCu2(CO3)(OH)2
O ParasymplesiteFe32+(AsO4)2 · 8H2O
O PyromorphitePb5(PO4)3Cl
O Schulenbergite(Cu,Zn)7(SO4)2(OH)10 · 3H2O
O SideriteFeCO3
O Katerinopoulosite(NH4)2Zn(SO4)2 · 6H2O
PPhosphorus
P PyromorphitePb5(PO4)3Cl
SSulfur
S AnglesitePbSO4
S BorniteCu5FeS4
S BrochantiteCu4(SO4)(OH)6
S ChalcopyriteCuFeS2
S GalenaPbS
S KtenasiteZnCu4(SO4)2(OH)6 · 6H2O
S LinaritePbCu(SO4)(OH)2
S PyriteFeS2
S Schulenbergite(Cu,Zn)7(SO4)2(OH)10 · 3H2O
S Katerinopoulosite(NH4)2Zn(SO4)2 · 6H2O
ClChlorine
Cl PyromorphitePb5(PO4)3Cl
FeIron
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
Fe GoethiteFe3+O(OH)
Fe LepidocrociteFe3+O(OH)
Fe ParasymplesiteFe32+(AsO4)2 · 8H2O
Fe PyriteFeS2
Fe SideriteFeCO3
CoCobalt
Co ErythriteCo3(AsO4)2 · 8H2O
CuCopper
Cu BorniteCu5FeS4
Cu BrochantiteCu4(SO4)(OH)6
Cu ChalcopyriteCuFeS2
Cu CupriteCu2O
Cu Native CopperCu
Cu KtenasiteZnCu4(SO4)2(OH)6 · 6H2O
Cu LinaritePbCu(SO4)(OH)2
Cu MalachiteCu2(CO3)(OH)2
Cu Schulenbergite(Cu,Zn)7(SO4)2(OH)10 · 3H2O
ZnZinc
Zn KtenasiteZnCu4(SO4)2(OH)6 · 6H2O
Zn Schulenbergite(Cu,Zn)7(SO4)2(OH)10 · 3H2O
Zn Katerinopoulosite(NH4)2Zn(SO4)2 · 6H2O
AsArsenic
As ErythriteCo3(AsO4)2 · 8H2O
As ParasymplesiteFe32+(AsO4)2 · 8H2O
PbLead
Pb AnglesitePbSO4
Pb CerussitePbCO3
Pb GalenaPbS
Pb LinaritePbCu(SO4)(OH)2
Pb PyromorphitePb5(PO4)3Cl

Other Databases

Wikipedia:https://de.wikipedia.org/wiki/Grube_Silberhardt
Wikidata ID:Q1550113

Mindat Articles

The Silberhardt Mine - a short overview of the history and geology by Marc Remmert


Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
Germany

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