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Buckwheat pit (Southwest opening; Buckwheat Mine), Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

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Latitude & Longitude (WGS84): 41° 6' 53'' North , 74° 35' 14'' West
Latitude & Longitude (decimal): 41.1147222222, -74.5872222222

The Buckwheat workings started as the Buckwheat Mine and the Southwest Opening, both at the southern end of the Franklin orebody. Subsequently, that portion of the orebody, at the shallow end where the two limbs of the orebody curved around and, vertically, form a "spoon" shaped basin, was excavated as the Buckwheat Pit. This later major working obliterated the two prior workings in total. The Buckwheat Pit incorporated areas intruded by pegmatites and featured major, vertical camptonite igneous dike intrusive bodies plus a veinlike body of vuggy dolomite (the Buckwheat Dolomite) of apparent Paleozoic age. All of these geological features contributed to the diverse mineralogy of this locality. This locality is within the Franklin Mining District. The complete list of mineral species occurring within this district, as well as the official boundaries of the district, can be found under the locality file for "Franklin Mining District."

Mineral List

Mineral list contains entries from the region specified including sub-localities

66 valid minerals. 7 (TL) - type locality of valid minerals.

Localities in this Region

  • New Jersey
    • Sussex Co.
      • Franklin Mining District
        • Franklin
          • Franklin Mine
            • Buckwheat Pit (Southwest Opening; Buckwheat Mine)

The above list contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


Palache, Charles (1935), USGS Professional Paper 180: 26, 28, 29, 32, 35, 39, 41, 43, 47, 49, 50, 55, 56, 57, 61, 67, 71, 77, 86, 89, 104, 106, 119.

Gordon, S.G. (1951), Brookite Crystals from Franklin, New Jersey: Rocks & Minerals: 26: 510-511.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 780.

Casperson, W.C. (1956): Heulandite and Stilbite: Rocks & Minerals: 31: 245. (or (1957), vol. 32)

Albanese, John S. (1967), Chlorophoenicite, Rocks & Minerals: 42: 888-889.

Cook, D.K. (1973), Recent Work on the Minerals of Franklin and Sterling Hill, New Jersey, Mineralogical Record: 4: 62-66.

American Mineralogist (1980): 65: 196-199.

Dunn, et al (1982), Jarosewichite and a related phase: basic manganese arsenates of the chlorophoenicite group from Franklin, New Jersey: American Mineralogist: 67: 1043-1047.

Peters, et al (1983), Minerals of the Buckwheat dolomite, Franklin, New Jersey, Mineralogical Record: 14: 183-194.

Germine, M. (1985), Fibrous Rutile from Franklin, New Jersey: Mineralogical Record: 16: 483-484.

Essene, E.J. and Peacor, D.R. (1987) Petedunnite (CaZnSi2O6), a new zinc clinopyroxene from Franklin, New Jersey, and phase equilibria for zincian pyroxenes. American Mineralogist (1987): 72: 157-166.

Dean Omar S. (1990), Those rare uraninites from Franklin and Sterling Hill, New Jersey: The Picking Table: 31(2): 7-11.

Dunn, et al (1992), Franklinphilite, the manganese analog of stilpnomelane, from Franklin, New Jersey: Mineralogical Record: 23: 465-468.

Dunn, Pete J. (1995), Franklin and Sterling Hill New Jersey: the world's most magnificent mineral deposits, Part 3: 363, 369, 414, 436.

Dunn, Pete J. (1995), Franklin and Sterling Hill New Jersey: the world's most magnificent mineral deposits, Part 4: 465, 470-471, 472, 485, 510, 513, 535, 584, 585, 592, 600, 604-605, 609, 615, 616.

Dunn, Pete J. (1995), Franklin and Sterling Hill New Jersey: the world's most magnificent mineral deposits, Part 5: 627, 644, 650, 665, 668, 669-670.

Nikischer, T. (1995): The Picking Table: 36(2): 11.

Bearss, G. & Cianciulli, J. (2000), Synchesite-(Y), The Picking Table: 41(2): 17-18.

The Picking Table (2000): 41(2): 20-21 (Thorutite).

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