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Indiana, USA

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Sediments of late Ordovician, Silurian, Devonian, Mississippian, and Pennsylvanian ages form the bedrock surface of Indiana. Structural high areas are in the southeastern portion of the state (Cincinnati arch) and the northern portion of the state. Igneous and metamorphic rocks are only known by drilling to the buried Precambrian bedrock. Up to 550 feet of glacial drift material covers 3/4ths of the state.

Occurrences of native copper, diamonds (~30 stones), gold and galena are derived from glacial deposits. Many other reports of igneous and metamorphic minerals are from assessments of heavy minerals from Ohio River and other sediments (see Switzerland County, for example).

Mineral List

Mineral list contains entries from the region specified including sub-localities

Actinolite

'Albite-Anorthite Series'

Allophane

var: Allophane-evansite

Alum-(K)

Alunite

Andalusite

Anhydrite

Ankerite

'Apatite'

'var: Collophane'

Aragonite

Augite

Baryte

Beraunite

'Biotite'

Calcite

var: Manganoan Calcite

Celestine

Chalcopyrite

Chlorapatite

'Chlorite Group'

Chromite

'Clays'

Coesite

Copiapite

Copper

Corundum

var: Ruby

var: Sapphire

Crandallite

Diadochite

Diamond

Diopside

Dolomite

var: Ferroan Dolomite

Enstatite

Epidote

Epsomite

Fayalite

Ferrihydrite

Ferrostrunzite

Fluorapatite

Fluorite

Galena

'Garnet'

Gibbsite

'Glass'

Glauconite

Goethite

Gold

Gypsum

var: Alabaster

var: Satin Spar Gypsum

var: Selenite

'Halloysite'

Halloysite-10Å

Hawleyite

Hematite

Hexahydrite

Honessite

'Hornblende'

Hydrobasaluminite

Hydromagnesite

Hydrozincite

'Hypersthene'

'Iddingsite'

Ilmenite

Iron

var: Kamacite

Jamborite

Kaolinite

'K Feldspar'

Kyanite

Leucophosphite

Leucoxene

'Limonite'

Magnetite

var: Titaniferous Magnetite

Malachite

Marcasite

Melanterite

Merrillite

'Meteoritic Iron'

Microcline

'Microperthite'

Millerite

Montmorillonite

'Moonstone'

Muscovite

var: Illite

var: Sericite

Nepheline

Nitrocalcite

'Olivine'

Opal

var: Wood Opal

Orthoclase

'Orthopyroxene Subgroup'

'Petrified Wood'

Phosphosiderite

Pigeonite

'Plessite'

Pyrite

'Pyroxene Group'

Pyrrhotite

Quartz

var: Agate

var: Amethyst

var: Chalcedony

Rozenite

Rutile

Schreibersite

Siderite

Sillimanite

'Smectite Group'

Smithsonite

Smythite (TL)

Sphalerite

Spinel

Stishovite

Strengite

Strontianite

Sulphur

Taenite

Titanite

Topaz

'Tourmaline'

Tremolite

Troilite

Vivianite

'Wad'

Xenotime-(Y)

Xitieshanite

Zircon


94 valid minerals. 1 (TL) - type locality of valid minerals.

Rock Types Recorded

Entries shown in red are rocks recorded for this region.

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!

Rock list contains entries from the region specified including sub-localities


Localities in this Region


The above list 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

Erd, R. C. and S.S. Greenburg (1960) Minerals of Indiana. Indiana Geological Survey Bulletin 18 73pp

Huizing, T. & R. Russell (1986) Indiana Minerals: A locality index: Rocks and Minerals:61 (3): 136- 151.
Note: that entire issue of Rocks and Minerals is devoted to Indiana rocks, minerals and fossils.

Camp, Mark & G. T. Richardson (2003) Roadside geology of Indiana: Mountain Press, 326 p.

External Links


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