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Fritz Island Mines, Cumru Township, Berks Co., Pennsylvania, USAi
Regional Level Types
Fritz Island MinesGroup of Mines
Cumru TownshipTownship
Berks Co.County
PennsylvaniaState
USACountry

This page kindly sponsored by In Memory of Ron Kendig
Key
Lock Map
Latitude & Longitude (WGS84):
40° 18' 21'' North , 75° 55' 25'' West
Latitude & Longitude (decimal):
Locality type:
Group of Mines
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Kenhorst2,867 (2017)1.4km
Grill1,468 (2017)1.6km
Reading87,879 (2017)3.3km
Flying Hills2,568 (2017)3.3km
Shillington5,265 (2017)3.6km


Located on the N end of Fritz Island in the Schuylkill River, 2 miles S of Reading.

Local rocks include a Triassic diabase intrusive.

Workings include an open pit with several drifts extending under the Schuylkill to Yost island. Inaccessible.

An account of the mine collapse and resultant flooding by the Schuylkill River appears on page 11 of the Reading Eagle newspaper July 21, 1982 edition.

Fritz Island is now the city of Reading waste water treatment facility.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


22 valid minerals.

Detailed Mineral List:

'Apophyllite'
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Aragonite
Formula: CaCO3
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Aurichalcite
Formula: (Zn,Cu)5(CO3)2(OH)6
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Azurite
Formula: Cu3(CO3)2(OH)2
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Bornite
Formula: Cu5FeS4
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Brucite
Formula: Mg(OH)2
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Calcite
Formula: CaCO3
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
'Chabazite'
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Chalcocite
Formula: Cu2S
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Chalcopyrite
Formula: CuFeS2
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
'Chlorite Group'
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Datolite
Formula: CaB(SiO4)(OH)
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
'Deweylite'
Formula: Mg4Si3O10 · 6H2O ?
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Fluorite
Formula: CaF2
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Galena
Formula: PbS
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
'Gismondine'
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Grossular
Formula: Ca3Al2(SiO4)3
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Hematite
Formula: Fe2O3
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Malachite
Formula: Cu2(CO3)(OH)2
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Mesolite
Formula: Na2Ca2Si9Al6O30 · 8H2O
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
'Phillipsite'
Reference: Ref.: Smith, Robert C. II (1978), Mineralogy of Pennsylvania: 184-85.
Pyrite
Formula: FeS2
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Quartz
Formula: SiO2
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Quartz var: Chalcedony
Formula: SiO2
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
'Scapolite'
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
'Scapolite var: Wernerite'
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
'Serpentine Subgroup var: Retinalite'
Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Stibnite ?
Formula: Sb2S3
Description: Doubtful occurrence. Montgomery, Arthur (1969), Mineralogy of Pennsylvania: 4.
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
'Stilbite subgroup'
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Talc
Formula: Mg3Si4O10(OH)2
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
'Thomsonite'
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Vesuvianite
Formula: (Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Reference: Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Stibnite ?2.DB.05Sb2S3
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Brucite4.FE.05Mg(OH)2
Hematite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Aragonite5.AB.15CaCO3
Aurichalcite5.BA.15(Zn,Cu)5(CO3)2(OH)6
Azurite5.BA.05Cu3(CO3)2(OH)2
Calcite5.AB.05CaCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Datolite9.AJ.20CaB(SiO4)(OH)
'Gismondine'9..
Grossular9.AD.25Ca3Al2(SiO4)3
Mesolite9.GA.05Na2Ca2Si9Al6O30 · 8H2O
Talc9.EC.05Mg3Si4O10(OH)2
Vesuvianite9.BG.35(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Unclassified Minerals, Rocks, etc.
'Apophyllite'-
'Chabazite'-
'Chlorite Group'-
'Deweylite'-Mg4Si3O10 · 6H2O ?
'Phillipsite'-
'Scapolite'-
'var: Wernerite'-
'Serpentine Subgroup'-D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
'var: Retinalite'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
'Stilbite subgroup'-
'Thomsonite'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 2:3
Stibnite ?2.11.2.1Sb2S3
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
X(OH)2
Brucite6.2.1.1Mg(OH)2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Azurite16a.2.1.1Cu3(CO3)2(OH)2
Malachite16a.3.1.1Cu2(CO3)(OH)2
Aurichalcite16a.4.2.1(Zn,Cu)5(CO3)2(OH)6
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Grossular51.4.3b.2Ca3Al2(SiO4)3
Group 54 - NESOSILICATES Borosilicates and Some Beryllosilicates
Borosilicates and Some Beryllosilicates with B in [4] coordination
Datolite54.2.1a.1CaB(SiO4)(OH)
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Vesuvianite58.2.4.1(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Talc71.2.1.3Mg3Si4O10(OH)2
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined strips
Chrysocolla74.3.2.1Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
'Gismondine'77.1.3.1
Mesolite77.1.5.4Na2Ca2Si9Al6O30 · 8H2O
Unclassified Minerals, Mixtures, etc.
'Apophyllite'-
Aragonite-CaCO3
'Chabazite'-
'Chlorite Group'-
'Deweylite'-Mg4Si3O10 · 6H2O ?
'Phillipsite'-
Quartz
var: Chalcedony
-SiO2
'Scapolite'-
'var: Wernerite'-
'Serpentine Subgroup'-D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
'var: Retinalite'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
'Stilbite subgroup'-
'Thomsonite'-

List of minerals for each chemical element

HHydrogen
H Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
H Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
H Serpentine Subgroup (var: Retinalite)D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
H TalcMg3Si4O10(OH)2
H BruciteMg(OH)2
H DeweyliteMg4Si3O10 · 6H2O ?
H MalachiteCu2(CO3)(OH)2
H AzuriteCu3(CO3)2(OH)2
H Aurichalcite(Zn,Cu)5(CO3)2(OH)6
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
H DatoliteCaB(SiO4)(OH)
H MesoliteNa2Ca2Si9Al6O30 · 8H2O
BBoron
B Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
B DatoliteCaB(SiO4)(OH)
CCarbon
C CalciteCaCO3
C AragoniteCaCO3
C MalachiteCu2(CO3)(OH)2
C AzuriteCu3(CO3)2(OH)2
C Aurichalcite(Zn,Cu)5(CO3)2(OH)6
OOxygen
O Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
O GrossularCa3Al2(SiO4)3
O Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
O Serpentine Subgroup (var: Retinalite)D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
O TalcMg3Si4O10(OH)2
O QuartzSiO2
O Quartz (var: Chalcedony)SiO2
O CalciteCaCO3
O BruciteMg(OH)2
O DeweyliteMg4Si3O10 · 6H2O ?
O AragoniteCaCO3
O MagnetiteFe2+Fe23+O4
O HematiteFe2O3
O MalachiteCu2(CO3)(OH)2
O AzuriteCu3(CO3)2(OH)2
O Aurichalcite(Zn,Cu)5(CO3)2(OH)6
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
O DatoliteCaB(SiO4)(OH)
O MesoliteNa2Ca2Si9Al6O30 · 8H2O
FFluorine
F Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
F FluoriteCaF2
NaSodium
Na Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Na MesoliteNa2Ca2Si9Al6O30 · 8H2O
MgMagnesium
Mg Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Mg Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Mg Serpentine Subgroup (var: Retinalite)D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Mg TalcMg3Si4O10(OH)2
Mg BruciteMg(OH)2
Mg DeweyliteMg4Si3O10 · 6H2O ?
AlAluminium
Al Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Al GrossularCa3Al2(SiO4)3
Al Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Al Serpentine Subgroup (var: Retinalite)D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Al MesoliteNa2Ca2Si9Al6O30 · 8H2O
SiSilicon
Si Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Si GrossularCa3Al2(SiO4)3
Si Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Si Serpentine Subgroup (var: Retinalite)D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Si TalcMg3Si4O10(OH)2
Si QuartzSiO2
Si Quartz (var: Chalcedony)SiO2
Si DeweyliteMg4Si3O10 · 6H2O ?
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Si DatoliteCaB(SiO4)(OH)
Si MesoliteNa2Ca2Si9Al6O30 · 8H2O
SSulfur
S GalenaPbS
S PyriteFeS2
S BorniteCu5FeS4
S ChalcopyriteCuFeS2
S ChalcociteCu2S
S StibniteSb2S3
CaCalcium
Ca Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Ca GrossularCa3Al2(SiO4)3
Ca CalciteCaCO3
Ca FluoriteCaF2
Ca AragoniteCaCO3
Ca DatoliteCaB(SiO4)(OH)
Ca MesoliteNa2Ca2Si9Al6O30 · 8H2O
MnManganese
Mn Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Mn Serpentine Subgroup (var: Retinalite)D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
FeIron
Fe Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Fe Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Fe Serpentine Subgroup (var: Retinalite)D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Fe MagnetiteFe2+Fe23+O4
Fe HematiteFe2O3
Fe PyriteFeS2
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
NiNickel
Ni Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Ni Serpentine Subgroup (var: Retinalite)D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
CuCopper
Cu BorniteCu5FeS4
Cu ChalcopyriteCuFeS2
Cu ChalcociteCu2S
Cu MalachiteCu2(CO3)(OH)2
Cu AzuriteCu3(CO3)2(OH)2
Cu Aurichalcite(Zn,Cu)5(CO3)2(OH)6
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
ZnZinc
Zn Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Zn Serpentine Subgroup (var: Retinalite)D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Zn Aurichalcite(Zn,Cu)5(CO3)2(OH)6
SbAntimony
Sb StibniteSb2S3
PbLead
Pb GalenaPbS

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Triassic
201.3 - 251.902 Ma



ID: 2754294
Limestone fanglomerate

Age: Triassic (201.3 - 251.902 Ma)

Description: Yellowish-gray to medium-gray, angular limestone and dolomite pebbles, cobbles, and fragments set in a red, very fine grained quartz matrix; a few shale-clast interbeds.

Comments: Original map source: Pennsylvania Bureau of Topographic and Geologic Survey, Department of Conservation and Natural Resources, Miles, C.E., and Whitfield, T.G., compilers, 2001, Bedrock Geology of Pennsylvania, edition: 1.0, digital map, scale 1:250,000.

Lithology: Major:{conglomerate}, Minor:{limestone,dolostone,shale}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Paleozoic
251.902 - 541 Ma



ID: 3187973
Paleozoic sedimentary rocks

Age: Phanerozoic (251.902 - 541 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Genth, F.A. (1874) Second Geological Survey of Pennsylvania, Mineralogy of Pennsylvania: Pgs. 9, 21, 28, 73, 107, 108, 109, 110, 114, 133, 154, 162, 168, 167.
Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York: 1067.
Spencer, Arthur C. (1908), Magnetite of the Cornwall type in Pennsylvania, U.S. Geol, Surv. Bull. 259: 38.
Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Reed, Juliet C. (1976), Annotated Bibliography of Minerals New to the Pennsylvania List - 1965-1974, Mineralogical Society of Pennsylvania, Inc. : 42-43, 53, 61-62.
Smith, Robert C. II (1978), Mineralogy of Pennsylvania 1966-1975: 135-138, 184-186.


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