Red Hill, Moultonborough, Carroll Co., New Hampshire, USA

References:
Quinn, A. (1937): Petrology of the Alkaline Rocks of Red Hill, New Hampshire (Bulletin of the Geological Society of America. v. 48).

Meyers & Stewart (1956): The Geology of New Hampshire -- Part III, Minerals and Mines, p.55.

Woolley, A.R. (1987): Alkaline Rocks and Carbonatites of the World

Henderson, C. M. B.; Karen Pendlebury; K. A. Foland (1989): Mineralogy and Petrology of the Red Hill Alkaline Igneous Complex, New Hampshire, U.S.A. (Journal of Petrology 30(3):627-666).

Dorais, Michael (1993): Pyroxene in enclaves and syenites of the Red Hill complex, New Hampshire: an ion and electron microprobe study (Contributions to Mineralogy and Petrology 114:130-138, May 1993).

Dorais, Michael; Neil D. MacRae and T. Grove (1994): Amphibole zoning in the Garland Peak Syenite, Red Hill complex, New Hampshire: camptonitic parental magmas and differentiation to silica-oversaturated syenites (Contributions to Mineralogy and Petrology 117:76-86, June 1994).