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Crater of Diamonds State Park (Arkansas Diamond Corp. Mine; Mauney Mine; Ozark Mine; Prairie Creek Lamproite), Murfreesboro, Pike Co., Arkansas, USA

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Diamonds were discovered at this location in 1906. Now a fee-based collecting site.

Four major rock types occur: magmatic lamproite (with mantle and crust-derived xenoliths); marr epiclastics (largely sandstone); lamproite lapilli tuff (phlogopite-rich); and lamproite breccia tuff. These last two types are the source of most of the diamonds recovered in the visitor area.

Haggertyite is present as microscopic hexagonal plates in the alteration zones of xenoliths in Prairie Creek lamproite.

The Prairie Creek Lamproite is Early Cretaceous (106mya) in age.

Mindat Articles

5. Diamonds R Waiting 4U At The Crater of Diamonds State Park by Frank Festa
TGMS 2008 - The Crater of Diamonds by Jolyon & Katya Ralph

Mineral List

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

35 entries listed. 25 valid minerals. 1 (TL) - type locality of valid minerals.

Localities in this Region


The above list contains all mineral locality references listed on 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 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.


- Gogineni, S.; Melton, C.; and Giardini. A. (1978): Some petrological aspects of the Prairie Creek diamond-bearing kimberlite diatreme, Arkansas (Contributions to Mineralogy and Petrology 66:252-262).

- Mitchell, Roger H. and Bergman, Steven C. (1991): Petrology of Lamproites (NY: Plenum Press).

- Grey, Ian E.; Velde, Danielle; Criddle, Alan J. (1998): Haggertyite, a new magnetoplumbite-type titanate mineral from the Prairie Creek (Arkansas) lamproite (American Mineralogist 83: 1323-1329).

- Mitchell, Roger H. and Chakhmouradian (1999):Sr-Bearing Perovskite and Loparite from Lamproite and Agpaitic Nepheline Syenite Pegmatites (Canadian Mineralogist 37:99-112).

- Velde, Danielle (2000): Mineralogy of mafic xenoliths and their reaction zones in the olivine lamproite from Prairie Creek Arkansas and the paragenesis of haggertyite, Ba [Fe6Ti5Mg]O19 (American Mineralogist 85: 420-429).

- Dunn, Dennis Patrick (2002): Xenolith mineralogy and geology of the Prairie Creek lamproite province, Arkansas (PhD dissertation, University of Texas, Austin)

- Howard, J. M. and Hanson, W. D. (2008): Geology of the Crater of Diamonds State Park and Vicinity, Pike County, Arkansas (Little Rock: Arkansas Geological Survey).

Smith, II, R. C. and Barnes, J. H. (2006), Blue Gray by Day and Pinkish Purple by Night: Pennsylvania's Pyrope Garnets, Pennsylvania Geology, v. 36, no. 4, p. 2-10. Also, the link below with analyses of five G5 and one G9 garnet from Crater of Diamonds, Arkansas.

External Links

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