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Trzmielak pegmatite, Bobrów, Gmina Mysłakowice, Karkonosze County, Lower Silesian Voivodeship, Polandi
| Regional Level Types | |
|---|---|
| Trzmielak pegmatite | Outcrop |
| Bobrów | Village |
| Gmina Mysłakowice | Gmina |
| Karkonosze County | County |
| Lower Silesian Voivodeship | Voivodeship |
| Poland | Country |
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Latitude & Longitude (WGS84):
50° 53' 2'' North , 15° 50' 55'' East
Latitude & Longitude (decimal):
Type:
Age:
358.9 ± 0.4 to 298.9 ± 0.15 Ma
Geologic Time:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Janowice Wielkie | 2,100 (2010) | 5.3km |
| Mysłakowice | 5,100 (2016) | 6.8km |
| Jelenia Góra | 87,310 (2010) | 8.6km |
| Wojcieszów | 3,933 (2011) | 9.1km |
| Jeżów Sudecki | 1,800 (2011) | 9.3km |
Other/historical names associated with this locality:
Hummelberg - Boberstein
(Kozłowski, Matyszczak)(2021):
Trzmielak Hill, southern slope of the hill, c. 50 m from the summit, edge of the railway excavation. Pegmatite (63 cm long) was composed of two irregular parts surrounded and separated by granophyric intergrowths. One part was completely filled by K-feldspar, quartz, minor oligoclase and albite, and the second, larger one, had a central void, where aggregates of tiny grains of epidote, calcite and natrolite (?) were found on pale smoky quartz and feldspars. A cubic, 4.7 mm in size, crystal of pale violet fluorite was included partly in quartz and its upper part was overgrown by calcite crust.
Note: Samples of pegmatites (Kozłowski, Matuszczak 2021) were collected in the years 1968–2006. GPS coordinates (15º51’38”E, 50º53’11”N) given by authors not correspond to the description, also there are differences in geographical names between the old German maps and modern maps (Hummelberg = Góra Tunelowa).
natrolite - probably wrong, visual (?) identification (laumontite or scolecite).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
5 valid minerals. 1 erroneous literature entry.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Albite Formula: Na(AlSi3O8) |
| ⓘ Albite var. Oligoclase Formula: (Na,Ca)[Al(Si,Al)Si2O8] |
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ Fluorite Formula: CaF2 |
| ⓘ 'K Feldspar' |
| ⓘ Formula: Na2Al2Si3O10 · 2H2O Description: natrolite has never been found in the pegmatites of Lower Silesia, the authors did not present any results of confirming analyzes; relatively common zeolites with a similar appearance are laumontite and scolecite, described from the miarolitic pegmatites (K.Andrzejewski) |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 3 - Halides | |||
|---|---|---|---|
| ⓘ | Fluorite | 3.AB.25 | CaF2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 9 - Silicates | |||
| ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ | Albite | 9.FA.35 | Na(AlSi3O8) |
| ⓘ | var. Oligoclase | 9.FA.35 | (Na,Ca)[Al(Si,Al)Si2O8] |
| ⓘ | Natrolite ? | 9.GA.05 | Na2Al2Si3O10 · 2H2O |
| Unclassified | |||
| ⓘ | 'K Feldspar' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| H | ⓘ Natrolite | Na2Al2Si3O10 · 2H2O |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Albite | Na(AlSi3O8) |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | ⓘ Natrolite | Na2Al2Si3O10 · 2H2O |
| O | ⓘ Albite var. Oligoclase | (Na,Ca)[Al(Si,Al)Si2O8] |
| O | ⓘ Quartz | SiO2 |
| F | Fluorine | |
| F | ⓘ Fluorite | CaF2 |
| Na | Sodium | |
| Na | ⓘ Albite | Na(AlSi3O8) |
| Na | ⓘ Natrolite | Na2Al2Si3O10 · 2H2O |
| Na | ⓘ Albite var. Oligoclase | (Na,Ca)[Al(Si,Al)Si2O8] |
| Al | Aluminium | |
| Al | ⓘ Albite | Na(AlSi3O8) |
| Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Al | ⓘ Natrolite | Na2Al2Si3O10 · 2H2O |
| Al | ⓘ Albite var. Oligoclase | (Na,Ca)[Al(Si,Al)Si2O8] |
| Si | Silicon | |
| Si | ⓘ Albite | Na(AlSi3O8) |
| Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | ⓘ Natrolite | Na2Al2Si3O10 · 2H2O |
| Si | ⓘ Albite var. Oligoclase | (Na,Ca)[Al(Si,Al)Si2O8] |
| Si | ⓘ Quartz | SiO2 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Ca | ⓘ Fluorite | CaF2 |
| Ca | ⓘ Albite var. Oligoclase | (Na,Ca)[Al(Si,Al)Si2O8] |
| Fe | Iron | |
| Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Other Regions, Features and Areas containing this locality
Czech Republic/Germany/Poland
- ⭔SilesiaRegion
Eurasian PlateTectonic Plate
- Saxo-Thuringian BeltOrogenic Belt
EuropeContinent
- Bohemian MassifMassif
- SudetesMountain Range
- Western SudetesMountain Range
- SudetesMountain Range
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