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Pockrandt Quarry (Edward Kraemer and Sons; Inc.), Glover Bluff, Marquette Co., Wisconsin, USA

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Latitude & Longitude (WGS84): 43° 58' 45'' North , 89° 31' 54'' West
Latitude & Longitude (decimal): 43.97944,-89.53167
GeoHash:G#: dpb64wjnb
Locality type:Quarry
Köppen climate type:Dfb : Warm-summer humid continental climate


Currently active (2015) quarry in Ordovician Prairie du Chien group dolostone. Quarry is apparently on the central uplift of a poorly preserved impact crater (the Glover Bluff structure), and is a source of specimens of shattercones and impactite breccia. Recent work (Renard, 2011) implies the impact was possible of Recent age.

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Standard Detailed Strunz Dana Chemical Elements

Mineral List


4 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

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Alphabetical List Tree Diagram

Detailed Mineral List:

Calcite
Formula: CaCO3
Reference: Ekern, G. I. & F. T. Thwaites (1930) The Glover Bluff Structure: a disturbed area in the Paleozoics of Wisconsin: Transactions of the Wisconsin Academy of Science, Arts and Letters: 25: 89-97..
'Chert'
Reference: Ekern, G. I. & F. T. Thwaites (1930) The Glover Bluff Structure: a disturbed area in the Paleozoics of Wisconsin: Transactions of the Wisconsin Academy of Science, Arts and Letters: 25: 89-97..
Dolomite
Formula: CaMg(CO3)2
Reference: Ekern, G. I. & F. T. Thwaites (1930) The Glover Bluff Structure: a disturbed area in the Paleozoics of Wisconsin: Transactions of the Wisconsin Academy of Science, Arts and Letters: 25: 89-97..
Glauconite
Formula: (K,Na)(Mg,Fe2+,Fe3+)(Fe3+,Al)(Si,Al)4O10(OH)2
Reference: Ekern, G. I. & F. T. Thwaites (1930) The Glover Bluff Structure: a disturbed area in the Paleozoics of Wisconsin: Transactions of the Wisconsin Academy of Science, Arts and Letters: 25: 89-97..
Quartz
Formula: SiO2
Reference: Ekern, G. I. & F. T. Thwaites (1930) The Glover Bluff Structure: a disturbed area in the Paleozoics of Wisconsin: Transactions of the Wisconsin Academy of Science, Arts and Letters: 25: 89-97..

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
'Quartz'4.DA.05SiO2
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
'Dolomite'5.AB.10CaMg(CO3)2
Unclassified Minerals, Rocks, etc.
'Chert'-
'Glauconite'-(K,Na)(Mg,Fe2+,Fe3+)(Fe3+,Al)(Si,Al)4O10(OH)2

List of minerals arranged by Dana 8th Edition classification

Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Glauconite71.2.2a.5(K,Na)(Mg,Fe2+,Fe3+)(Fe3+,Al)(Si,Al)4O10(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
'Chert'-

List of minerals for each chemical element

HHydrogen
H Glauconite(K,Na)(Mg,Fe2+,Fe3+)(Fe3+,Al)(Si,Al)4O10(OH)2
CCarbon
C CalciteCaCO3
C DolomiteCaMg(CO3)2
OOxygen
O CalciteCaCO3
O DolomiteCaMg(CO3)2
O Glauconite(K,Na)(Mg,Fe2+,Fe3+)(Fe3+,Al)(Si,Al)4O10(OH)2
O QuartzSiO2
NaSodium
Na Glauconite(K,Na)(Mg,Fe2+,Fe3+)(Fe3+,Al)(Si,Al)4O10(OH)2
MgMagnesium
Mg DolomiteCaMg(CO3)2
Mg Glauconite(K,Na)(Mg,Fe2+,Fe3+)(Fe3+,Al)(Si,Al)4O10(OH)2
AlAluminium
Al Glauconite(K,Na)(Mg,Fe2+,Fe3+)(Fe3+,Al)(Si,Al)4O10(OH)2
SiSilicon
Si Glauconite(K,Na)(Mg,Fe2+,Fe3+)(Fe3+,Al)(Si,Al)4O10(OH)2
Si QuartzSiO2
KPotassium
K Glauconite(K,Na)(Mg,Fe2+,Fe3+)(Fe3+,Al)(Si,Al)4O10(OH)2
CaCalcium
Ca CalciteCaCO3
Ca DolomiteCaMg(CO3)2
FeIron
Fe Glauconite(K,Na)(Mg,Fe2+,Fe3+)(Fe3+,Al)(Si,Al)4O10(OH)2

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Ekern, G. I. & F. T. Thwaites (1930) The Glover Bluff Structure: a disturbed area in the Paleozoics of Wisconsin: Transactions of the Wisconsin Academy of Science, Arts and Letters: 25: 89-97.
Read, W. F. (1983) Shatter cones at Glover Bluff, Wisconsin: Meteoritics: 18 (3): 241-243.

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