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

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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-(Ce)
Allanite Group
Amphibole Supergroup
Analcime
Anatase
Andradite
Anhydrite
Ankerite
Annite
Anorthite
'Apophyllite'
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
Fluorapophyllite-(K)
Fluorite
Gaidonnayite
Galena
Ganophyllite
Gypsum
Haüyne
var: Lazurite

Helvine
'Heulandite'
'Hornblende'
Ilmenite
Joaquinite-(Ce)
'Joaquinite Group'
Kaersutite
Kainosite-(Y)
Kaolinite
'K Feldspar'
Kupletskite
Låvenite
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 Subgroup'
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 (TL) - type locality of valid minerals.

Localities in this Region


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