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Diamond Jo Quarry, Magnet Cove, Hot Spring Co., Arkansas, USA

Lourenswalsite
Diamond Jo Quarry, Magnet Cove, Hot Spring Co., Arkansas, USA

Photo: Thomas Witzke
A stone quarry in garnet-pseudoleucite syenite in an alkalic ring-dike complex also including nepheline syenite pegmatite, ijolite and carbonatites. Quarried for railroad ballast rock.
Located on the South rim of Magnet Cove formation. Started in the 1870's and worked sporadically until 1900's. Owned by Henry de Linde of Mabelvale, Arkansas. Mineralization is in miarolitic cavities in the rock.

References

- Rocks & Min.: 63:109 & 64:298 & 300-307
- Appleman et al. (1987)
- Stone et al. (1982)
- Barwood, H (1995): Benitoite and Joaquinite in Arkansas. Min. News: 11(5): 2, 5.

Mineral List

Aegirine
Albite
'Amphibole Group'
Anatase
'Ancylite'
Andradite
var: Melanite
'Apophyllite'
Arfvedsonite
Augite
Baryte
Barytocalcite
Benitoite
Biotite
'Britholite Group'
Brookite
Calcite
Cancrinite
Catapleiite
'Clinopyroxene Subgroup'
Crandallite
Delindeite (TL)
Diopside
Elpidite
Eudialyte
Ferrohornblende
Fluorapatite
Fluorite
Goethite
Gonnardite
Gypsum
Hematite
Ilmenite
Joaquinite-(Ce)
Kassite
Kupletskite
Labuntsovite-Mn
Leucite
Lorenzenite
Lourenswalsite (TL)
Magnesio-arfvedsonite
Magnetite
Molybdenite
Narsarsukite
Natrolite
Nepheline
Opal
Orthoclase
Pectolite
Perovskite
Phlogopite
'Pseudoleucite'
Pyrite
Pyrophanite
'Pyroxene Group'
Pyrrhotite
Quartz
Schorlomite
Seidite-(Ce)
Siderophyllite
Sodalite
Sphalerite
Tainiolite
Thomsonite-Ca
Titanite
Wollastonite
Zircon
Zircophyllite


68 entries listed. 59 valid minerals. 2 type localities (valid minerals).

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Copyright © Jolyon Ralph and Ida Chau 1993-2011. Jobs in Arkansas, USA Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 11th Jul 2011 10:50:32
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