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Szeroka quarry, Strzegom, Gmina Strzegom, Świdnica County, Lower Silesian Voivodeship, Polandi
Regional Level Types
Szeroka quarryQuarry (Inactive)
StrzegomTown
Gmina StrzegomGmina
Świdnica CountyCounty
Lower Silesian VoivodeshipVoivodeship
PolandCountry

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Latitude & Longitude (WGS84):
50° 58' 18'' North , 16° 19' 53'' East
Latitude & Longitude (decimal):
Type:
Quarry (Inactive) - last checked 2019
Age:
19,84 ± 0,93 Ma
Geologic Time:
Dating method:
K / Ar
Reference for age:
Birkenmajer et al., (2004) - Radiometric dating of the Tertiary volcanics in Lower Silesia, Poland. IV Annales Societatis Geologorum Poloniae, 74: 1
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Strzegom17,004 (2010)1.6km
Zółkiewka392 (2010)1.9km
Stanowice1,200 (2010)5.4km
Konary505 (2010)8.8km
Mściwojów489 (2010)8.9km
Mindat Locality ID:
300844
Long-form identifier:
mindat:1:2:300844:0
GUID (UUID V4):
a4bfb0f4-8aa8-4343-b1cd-d6d31fe50eea
Other/historical names associated with this locality:
Breitenberg quarry, Breitenberg - Georgenberg 354m - Kreuzberg 358m / Góra Szeroka - Góra św. Jerzego - Góra Krzyżowa
Name(s) in local language(s):
kamieniołom bazaltu Strzegom - Żółkiewka / Krzyżowa Góra


Closed alkali basalt quarry (volcanic rock defined as a alkali basalt with some bazanite parameters). Originally there were three similarly sized hills formed by the same Miocene vulcano. One hill was almost fully quarried away. Currently the old quarry area is flooded with water and together with two volcanic hills is the last refuge of wildlife in the Strzegom area.

The quarry was founded on the slopes of Góra Szeroka (in German "Breitenberg") in the 19th century, however three centuries earlier, the greatest treasure of the land of Strzegom of those times was mined here - Terra sigillata, highly prized 'medicinal earth' against poisoning or for general cure for any kind of body intoxication. The product from local clay was processed into small tablets and stamped with the coat of arms of the city Striga (later Strigovia, Striegau). Sold in a large area of central Europe, it became the most important export product of the city. Modern studies of preserved tablets have shown that they are made of a mixture of montmorillonite with illite and also the other clay minerals.

One of the few places in Lower Silesia with the possibility to observe a contact between Paleozoic granitoid rocks and Cenozoic lavas from the Central European Volcanic Province. The contact zone was visible until recently in the southern part of the quarry. The colour of granite was turning to reddish, also in a lava flow xenoliths of quartz with tridymite bands occurred and up to 3 cm metasomatic K-feldspar crystals were found. In the northern part of the quarry, a volcanic breccia occurs with quite common chabazite in vugs.

In 1829 German mineralogist Ernst Friedrich Glocker (who is credited with coining many mineral terms, like pyrargyrite - 1831, halite - 1847, sphalerite - 1847, arsenopyrite - 1847), director of the Mineral Cabinet of the University of Breslau (today Mineralogical Museum, University of Wrocław) published research results about Hyalite that he found on the lichens of the genus Lecidea parachena, Parnelia parietina and Lecanuova aurantica, covering the basalt rocks of Góra Krzyżowa. This found was the proof of the present formation time of this mineral.

Note: There is a nearby basalt volcano, approx. 2.5 km west of this quarry - Żelazowska Góra (in German "Brechselberg"), altitude 301 m, between the villages Żołkiewka (Pilgrimshain) and Żelazno (Eisdorf), with olivine and pyroxene phenocrysts as a rock-forming minerals.

K.Andrzejewski

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


11 valid minerals.

Detailed Mineral List:

Analcime
Formula: Na(AlSi2O6) · H2O
Aragonite
Formula: CaCO3
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
'Bole'
Calcite
Formula: CaCO3
'Chabazite'
Forsterite
Formula: Mg2SiO4
'Kerolite'
Formula: (Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
'K Feldspar'
Montmorillonite
Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Muscovite var. Illite
Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2
Natrolite
Formula: Na2Al2Si3O10 · 2H2O
Opal
Formula: SiO2 · nH2O
Opal var. Hyalite
Formula: SiO2 · nH2O
'Phillipsite Subgroup'
Quartz
Formula: SiO2
Quartz var. Chalcedony
Formula: SiO2
Tridymite
Formula: SiO2

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Quartz
var. Chalcedony
4.DA.05SiO2
4.DA.05SiO2
Opal
var. Hyalite
4.DA.10SiO2 · nH2O
Tridymite4.DA.10SiO2
Opal4.DA.10SiO2 · nH2O
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Aragonite5.AB.15CaCO3
Group 9 - Silicates
Forsterite9.AC.05Mg2SiO4
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var. Illite9.EC.15K0.65Al2.0[Al0.65Si3.35O10](OH)2
Montmorillonite9.EC.40(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Natrolite9.GA.05Na2Al2Si3O10 · 2H2O
Analcime9.GB.05Na(AlSi2O6) · H2O
Unclassified
'Phillipsite Subgroup'-
'Chabazite'-
'Bole'-
'Kerolite'-(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
'K Feldspar'-

List of minerals for each chemical element

HHydrogen
H AnalcimeNa(AlSi2O6) · H2O
H Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
H Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
H NatroliteNa2Al2Si3O10 · 2H2O
H OpalSiO2 · nH2O
H Kerolite(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
H Opal var. HyaliteSiO2 · nH2O
CCarbon
C AragoniteCaCO3
C CalciteCaCO3
OOxygen
O AnalcimeNa(AlSi2O6) · H2O
O AragoniteCaCO3
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O CalciteCaCO3
O Quartz var. ChalcedonySiO2
O ForsteriteMg2SiO4
O Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
O MuscoviteKAl2(AlSi3O10)(OH)2
O Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
O NatroliteNa2Al2Si3O10 · 2H2O
O OpalSiO2 · nH2O
O QuartzSiO2
O TridymiteSiO2
O Kerolite(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
O Opal var. HyaliteSiO2 · nH2O
NaSodium
Na AnalcimeNa(AlSi2O6) · H2O
Na Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Na NatroliteNa2Al2Si3O10 · 2H2O
MgMagnesium
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mg ForsteriteMg2SiO4
Mg Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Mg Kerolite(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
AlAluminium
Al AnalcimeNa(AlSi2O6) · H2O
Al Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Al NatroliteNa2Al2Si3O10 · 2H2O
SiSilicon
Si AnalcimeNa(AlSi2O6) · H2O
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si Quartz var. ChalcedonySiO2
Si ForsteriteMg2SiO4
Si Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Si NatroliteNa2Al2Si3O10 · 2H2O
Si OpalSiO2 · nH2O
Si QuartzSiO2
Si TridymiteSiO2
Si Kerolite(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
Si Opal var. HyaliteSiO2 · nH2O
KPotassium
K Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca AragoniteCaCO3
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca CalciteCaCO3
Ca Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
FeIron
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
NiNickel
Ni Kerolite(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)

Other Regions, Features and Areas containing this locality

Czech Republic/Germany/Poland
Czech Republic/Poland
Eurasian PlateTectonic Plate
EuropeContinent
  • Bohemian Massif
Poland

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

 
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