-
Mcgovernite (ex Rich Kosnar Collection)
- Sterling Hill, Ogdensburg, Franklin Mining District, Sussex County, New Jersey (Type Locality)
- Cabinet, 12.8 x 6.2 x 6.2 cm
- Start Time: 01/21/2010 6:45:00 pm (CST)
- End Time: 01/28/2010 6:49:54 pm (CST)
- Auction Closed
Item Description
Mcgovernite is a complex and interesting silicate as it is the species with the largest number of atoms in the unit cell. The formula for the species reads (Mn,Mg,Zn) 273 As 3+ ~12 As 5+ ~30 Si ~42 O 324 (OH) 252. Mcgovernite is only found in one locality in the world according to mindat (http://www.mindat.org/min-2614.html). The species was named after the famous Franklin mineral collector, J. J. McGovern. This specimen is a rich full cabinet sized display piece of featuring a thick zone of strong copper colored Mcgovernite on typical Franklin ore matrix. Simply one of the best examples of the species that I have seen, and certainly one of the largest display specimens of this unique material that I have handled in my life.