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Marshalltown, Marshall County, Iowa, USAi
Regional Level Types
MarshalltownCity
Marshall CountyCounty
IowaState
USACountry

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PhotosMapsSearch
Type:
City
Largest Settlements:
PlacePopulation
Marshalltown27,620 (2017)
Mindat Locality ID:
26104
Long-form identifier:
mindat:1:2:26104:8
GUID (UUID V4):
0


Marshalltown is a city and the county seat of Marshall County.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


1 valid mineral.

Detailed Mineral List:

ⓘ Quartz
Formula: SiO2
References:
Rocks&Min. 20:480.
ⓘ Quartz var. Agate
Formula: SiO2
References:
Rocks&Min. 20:480.
ⓘ Quartz var. Chalcedony
Formula: SiO2
References:
Rocks&Min. 20:480.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘQuartz
var. Agate		4.DA.05SiO2
ⓘvar. Chalcedony4.DA.05SiO2
ⓘ4.DA.05SiO2

List of minerals for each chemical element

OOxygen
Oⓘ Quartz var. AgateSiO2
Oⓘ Quartz var. ChalcedonySiO2
Oⓘ QuartzSiO2
SiSilicon
Siⓘ Quartz var. AgateSiO2
Siⓘ Quartz var. ChalcedonySiO2
Siⓘ QuartzSiO2

Fossils

There are 4 fossil localities from the PaleoBioDB database within this region.

These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.

Occurrences4
Youngest Fossil Listed372 Ma (Late/Upper Devonian)
Oldest Fossil Listed383 Ma (Late/Upper Devonian)
Stratigraphic Units
UnitNo. OccurrencesAge
Hackberry - Lime Creek - Cerro Gordo4382.7 - 372.2 Ma (Late/Upper Devonian)
Fossils from RegionClick here to show the list.
Accepted NameHierarchy Age
Antirotella kindlei
species		Animalia : Mollusca : Gastropoda : Turbinidae : Antirotella : Antirotella kindlei382.7 - 372.2 Ma
Late/Upper Devonian
Floyda concentrica
species		Animalia : Mollusca : Gastropoda : Palaeotrochidae : Floyda : Floyda concentrica382.7 - 372.2 Ma
Late/Upper Devonian
Turbonopsis hackberryensis
species		Animalia : Mollusca : Gastropoda : Euomphalina : Palaeotrochidae : Turbonopsis : Turbonopsis hackberryensis382.7 - 372.2 Ma
Late/Upper Devonian
Pseudoplagiothyra praecursor
species		Animalia : Mollusca : Gastropoda : Naticopsidae : Pseudoplagiothyra : Pseudoplagiothyra praecursor382.7 - 372.2 Ma
Late/Upper Devonian
Fossil LocalitiesClick to show 1 fossil locality

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Marshalltown,_Iowa
Wikidata ID:Q913495
GeoNames ID:4866371


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

Rocks & Min.: 20:480.
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