This quarry lies on the Franklin marble belt where the crystallized, precambrian marble was quarried for lime. The locality is now several golf courses and rows of townhomes.
The Edison-Bodnar quarry is the best known of a group of small openings in the Franklin marble east of Hamburg. There are several quarries listed in Mindat under Rudeville, Hardyston Township, Sussex County, New Jersey, USA. All of the others say “One of the Bodnar Group of quarries”. It seems that the nomenclature of these pits is uncertain.
The Edison-Bodnar quarry, locally referred to in recent times simply as the Bodnar quarry, is currently at the edge of a townhouse/golf course development. It is the middle one, of three water filled pits and the one closest to the dump where fluoborite-bearing material (Kearns, 1975) was abundant in the mid 1970’s. The occurrence of abundant fluoborite led to the search for other borates. A silicate-borate skarn, approximately 2 feet thick and traceable for more than 20 feet, has been described by Volkert (2005). U-Pb dating of zircons derived from this skarn suggests a long and varied history. Its present form appears to be due to recrystallization during a hydrothermal event that coincided with pegmatite emplacement in the region between approximately 1004 MA and 965 MA. This skarn, like many in the Franklin marble, is undeformed which leads to the question, still unresolved, as to whether it is a hydrothermal product or the recrystallization of material already in place.
Beyond the occurrence of borates this locality yielded a variety of other species typical of the Franklin marble including amphiboles, pyroxenes, humites and uvite.
References: Kearns, L. E., 1975, Fluoborite, A New Locality, The Mineralogical Record, V. 6, pg. 174-5.
Volkert, R.A., Zartman, R.E., and Moore, P.B., 2005, U – Pb Geochronology of Mesoproterozoic Postorogenic Rocks and Implications for Posty-Ottawan Magmatism and Metallogenesis, New Jersey Highlands and Contiguous Areas, USA. Precambrian Research, V. 139, pgs. 1 – 19.
|
|
Map Reference: 41°9'15"N , 74°33'6"W
This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org 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.
|
13 entries listed. 12 valid minerals.
The above list contains all mineral locality references listed on mindat.org. 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!
