Group 2 - Sulphides and Sulfosalts
ⓘ	Sphalerite	2.CB.05a	ZnS
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Pyrite	2.EB.05a	FeS₂
ⓘ	Marcasite	2.EB.10a	FeS₂
ⓘ	Orpiment	2.FA.30	As₂S₃
Group 4 - Oxides and Hydroxides
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	Hematite	4.CB.05	Fe₂O₃
ⓘ	Quartz	4.DA.05	SiO₂
ⓘ	Pyrolusite	4.DB.05	Mn⁴⁺O₂
Group 9 - Silicates
ⓘ	Kaolinite	9.ED.05	Al₂(Si₂O₅)(OH)₄
Unclassified
ⓘ	'Hypersthene'	-	(Mg,Fe)SiO₃
ⓘ	'Limonite'	-
ⓘ	'Fayalite-Forsterite Series'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Kaolinite	Al₂(Si₂O₅)(OH)₄
O	Oxygen
O	ⓘ Hematite	Fe₂O₃
O	ⓘ Hypersthene	(Mg,Fe)SiO₃
O	ⓘ Kaolinite	Al₂(Si₂O₅)(OH)₄
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Pyrolusite	Mn⁴⁺O₂
O	ⓘ Quartz	SiO₂
O	ⓘ Fayalite-Forsterite Series
Mg	Magnesium
Mg	ⓘ Hypersthene	(Mg,Fe)SiO₃
Mg	ⓘ Fayalite-Forsterite Series
Al	Aluminium
Al	ⓘ Kaolinite	Al₂(Si₂O₅)(OH)₄
Si	Silicon
Si	ⓘ Hypersthene	(Mg,Fe)SiO₃
Si	ⓘ Kaolinite	Al₂(Si₂O₅)(OH)₄
Si	ⓘ Quartz	SiO₂
Si	ⓘ Fayalite-Forsterite Series
S	Sulfur
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Marcasite	FeS₂
S	ⓘ Orpiment	As₂S₃
S	ⓘ Pyrite	FeS₂
S	ⓘ Sphalerite	ZnS
Mn	Manganese
Mn	ⓘ Pyrolusite	Mn⁴⁺O₂
Fe	Iron
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Hematite	Fe₂O₃
Fe	ⓘ Hypersthene	(Mg,Fe)SiO₃
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Marcasite	FeS₂
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Fayalite-Forsterite Series
Cu	Copper
Cu	ⓘ Chalcopyrite	CuFeS₂
Zn	Zinc
Zn	ⓘ Sphalerite	ZnS
As	Arsenic
As	ⓘ Orpiment	As₂S₃

Fossils

There are 1 fossil locality 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.

Occurrences

Youngest Fossil Listed

479 Ma (Early/Lower Ordovician)

Oldest Fossil Listed

485 Ma (Cambrian)

Stratigraphic Units

Unit	No. Occurrences	Age
Roubidoux	1	485.4 - 478.6 Ma (Paleozoic)

Fossils from Region

Click here to show the list.

Accepted Name	Hierarchy	Age
Kirengella oregonensis species	Animalia : Mollusca : Tergomya : Tryblidiida : Kirengellidae : Kirengella : *Kirengella oregonensis*	485.4 - 478.6 Ma Paleozoic

Fossil Localities

Click to show 1 fossil locality

USA

Missouri
- Oregon County
  - Paleozoic🐚 near Gold Mine Hollow

Other Databases

Wikipedia:	https://en.wikipedia.org/wiki/Oregon_County,_Missouri
Wikidata ID:	Q484612
GeoNames ID:	4402012

Localities in this Region

Other Regions, Features and Areas that Intersect

North AmericaContinent

North America PlateTectonic Plate

Granite-Rhyolite ProvinceMagmatic Province
Shawnee DomainDomain

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.

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Mineral List

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Detailed Mineral List:

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List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Fossils

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Localities in this Region

Other Regions, Features and Areas that Intersect

Oregon County, Missouri, USA i
Regional Level Types
Oregon County County
Missouri State
USA Country