Alkaline Rocks and Carbonatites of the World

Setup during HiTech AlkCarb: an online database of alkaline rock and carbonatite occurrences

Jackson Dome

stripes

Occurrence number: 
174-00-125
Country: 
United States
Region: 
Mississippi
Location: 
Longitude: -90.25, Latitude: 32.25
Carbonatite: 
No

Drilling in the Jackson Dome has encountered numerous occurrences of igneous rocks, many of which are alkaline. Aegirine tinguaites with subhedral nepheline and a little sodalite and hauyne have been found (Moody, 1949, p. 1416) and in the Hamilton No. 1 Well near Jackson a tinguaite with analcime, apparently primary, together with melanite, sphene and apatite, was identified. In three wells nephelinite dykes containing euhedral nephelines with some pyroxene and amphibole were cored.

References: 

KIDWELL, A.L. 1951. Mesozoic igneous activity in the northern Gulf Coast Plain. Transactions of the Gulf-Coast Association of Geological Societies, 1: 182-99.
MONROE, W.H. 1954. Geology of the Jackson area Mississippi. Bulletin, United States Geological Survey, 986: 1-133.
MOODY, C.L. 1949. Mesozoic igneous rocks of northern Gulf Coastal Plain. Bulletin of the American Association of Petroleum Geologists, 33: 1410-28

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith