Quartz from selected localities.
USA | |
| The Minerals of NYC & Its Environs, NY Min. Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931): 68. |
| Van King |
| John Betts | |
| [Chalcedony var: Agate] Mins. of NYC & Its Environs, NY Min. Club (1931), Manchester, J.G.; Rocks & Min.: 18:332-333 (1943), Drake, H.Y.; 59-157-183 (1984), Peters, Joseph J.; NJ Geol. Survey Bull. #64 (1960), Mason, B. | |
| [Chalcedony var: Agate] Rocks & Min.:6:120, 11:184; 19:306-309 & 59:157-183, Peters, Joseph J.; 15:111-115 (1940), Sachs; 59:157-183, Peters, Joseph J. (1984); Mins. of NYC & Its Environs, NY Min. Club (1931), Manchester, J.G.; NJ Geol. Survey Bull. #64 (1960), Mason, B. |
| Peacor, et al (1985), Steriss, et al (1987) | |
| [var: Amethyst] Hoadley (1923) June 14 meeting of the Phila. Min. Soc. | |
| [Chalcedony var: Agate] John Betts specimens for sale | |
| [Chalcedony var: Agate] Rocks & Min.:11:184. | |
| A Quest for New Jersey Minerals, Robert Speiser(1978):12. | |
| Mason, B. H. (1960). Trap rock minerals of New Jersey (Vol. 64). State of New Jersey, Department of Conservation and Economic Development, Division of Planning and Development. |
| [var: Amethyst] Ref.: Mineral Collector: 2:138-139, Ehrman, A.H. (1895); Min. Collector 15: 113-118, Papke, H. (1908); NJ Geol. Survey Bull. #64, Trap Rock Mins of NJ, Mason, B. (1960); Rocks & Min.: 59:157-183, Peters, J.J. (1984) | |
| [var: Amethyst] Rocks & Min.: 18:105. |
| Warren Cummings, personal communication, 2008 |
Houdaille Quarry, Little Falls Township, Passaic County, New Jersey, USA