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Weber Cave, Dubuque County, Iowa, USAi
Regional Level Types
Weber CaveCave
Dubuque CountyArea
IowaState
USACountry

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Latitude & Longitude (WGS84):
42° 24' 0'' North , 90° 50' 20'' West
Latitude & Longitude (decimal):
42.40014,-90.83908
GRN:
N29W49
Type:
Cave
Köppen climate type:
Dfa : Hot-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Peosta1,618 (2017)5.7km
Centralia130 (2017)8.0km
Epworth1,955 (2017)9.1km
Bernard109 (2017)9.8km
Farley1,691 (2017)14.5km
Mindat Locality ID:
459203
Long-form identifier:
mindat:1:2:459203:0
GUID (UUID V4):
0
Other/historical names associated with this locality:
Weber's cave


Located 4 miles (~6.4 km) SE to Dubuque (possibly close to Peosta?). Precise coordinates couldn't be found -> set arbitrally.

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List


2 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

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Alphabetical List Tree Diagram

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘBirnessite4.FL.45(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘGypsum7.CD.40CaSO4 · 2H2O
ⓘvar. Selenite7.CD.40CaSO4 · 2H2O

List of minerals for each chemical element

HHydrogen
Hⓘ Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
Hⓘ GypsumCaSO4 · 2H2O
Hⓘ Gypsum var. SeleniteCaSO4 · 2H2O
OOxygen
Oⓘ Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
Oⓘ GypsumCaSO4 · 2H2O
Oⓘ Gypsum var. SeleniteCaSO4 · 2H2O
NaSodium
Naⓘ Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
SSulfur
Sⓘ GypsumCaSO4 · 2H2O
Sⓘ Gypsum var. SeleniteCaSO4 · 2H2O
CaCalcium
Caⓘ Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
Caⓘ GypsumCaSO4 · 2H2O
Caⓘ Gypsum var. SeleniteCaSO4 · 2H2O
MnManganese
Mnⓘ Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

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

Peck, Stewart N. (1977) A Growth Rate For Cave Gypsum Needles. The NSS Bulletin, 39 (4). 104-105
White, William B.; Vito, Carmen; Scheetz, Barry, E. (2009) The mineralogy and trace element chemistry of black manganese oxide deposits from caves. Journal of Cave and Karst Studies, 71 (2). 136-143
Onac, Bogdan P. (2025) Cave minerals of the 21st century: A 2025 review and update. International Journal of Speleology, 54 (1). ijs2552 doi:10.5038/1827-806x.ijs2552
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