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Granite Mountain area, Little Rock, Pulaski Co., Arkansas, USA

Ref.: Rocks & Min.: 63:120-121; 64:314; Barwood (1987); http://www.koeln.netsurf.de/~w.steffens/gran.htm A complex intrusion (pluton) of medium- to coarse-grained syenite (nepheline & somewhat porphyritic alkali syenite), that crops out in a belt. The outcrop runs from Benton, Saline Co. to the city limits of Little Rock, Pulaski Co. The older unit is an altered olivine syenite and the younger an analcime nepheline syenite.

Mineral List

Mineral list contains entries from the region specified including sub-localities
Aegirine
Aenigmatite
Aeschynite-(Y)
Albite
'Allanite'
Allanite-(Ce)
Amphibole Supergroup
Analcime
Anatase
Andradite
Anhydrite
Ankerite
Annite
Anorthite
'Apophyllite'
Apophyllite-(KF)
Arfvedsonite
Astrophyllite
Augite
Baryte
'Bastnäsite'
Bastnäsite-(Ce)
'Biotite'
Britholite-(Ce)
'Britholite Group'
Brookite
Calcite
Cancrinite
Catapleiite
 'Chabazite'
Chamosite
'Chlorite Group'
Chrysotile
'Clinopyroxene Subgroup'
Cookeite
Diopside
Dolomite
Edenite
Eggletonite (TL)
Epidote
Eudialyte
'Fergusonite'
Fergusonite-(Ce)
Fersmite
'Florencite'
Florencite-(Ce)
Fluorapatite
Fluorite
Gaidonnayite
Galena
Ganophyllite
Gypsum
Helvine
'Heulandite'
'Hornblende'
Ilmenite
Joaquinite-(Ce)
'Joaquinite Group'
 Kaersutite
Kainosite-(Y)
Kaolinite
'K Feldspar'
Kupletskite
Låvenite
Lazurite
Magnetite
Mesolite
Microcline
Molybdenite
Mordenite
Mosandrite
Narsarsukite
Natrolite
Nepheline
Nontronite
Nosean
'Olivine'
Opal
Orthoclase
'Parisite'
Parisite-(Ce)
Pectolite
Phlogopite
Polylithionite
Prehnite
Pyrite
Pyrochlore Group
 'Pyrochlore Supergroup
var: Betafite (of Hogarth 1977)'
Pyrolusite
Pyrophanite
'Pyroxene Group'
Pyrrhotite
Quartz
var: Chalcedony
Riebeckite
Rinkite
Sérandite
'Serpentine Group'
Siderite
Sodalite
Sphalerite
Spinel
'Stilbite'
'Synchysite Group'
'Tetranatrolite'
Thaumasite
'Thomsonite'
Thomsonite-Ca
Thorite
Titanite
Vermiculite
Wurtzite
Zircon
Zircophyllite


192 entries listed. 90 valid minerals. 1 type locality (valid mineral).

Localities in this Region

USA

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Copyright © Jolyon Ralph and Ida Chau 1993-2013. 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.
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