Granite Mountain area, Little Rock, Pulaski Co., Arkansas, USA
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|Location is approximate, estimate based on other nearby localities.|
|Latitude & Longitude (WGS84):||34° North , 92° West (est.)|
|Margin of Error:||~3km|
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 ListMineral list contains entries from the region specified including sub-localities
92 valid minerals. 1 (TL) - type locality of valid minerals.
Localities in this Region
- Pulaski Co.
- Little Rock
- Pulaski Co.
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Rocks & Min.: 63:120-121; 64:314; Barwood (1987);