A Rare Franklin Margarosanite Specimen
from the world famous Park Shaft Franklin New Jersey
weighing 622 grams or 1.38 pounds
measuring 3 3/4 x 3 x 2 1/4 inches
$3,500.00 No Reserve
Some photos of us underground at the Sterling Hill Zinc Mine over the years
Margarosanite (from FOMS)
A beautiful margarosanite specimen from the B. Kreiderenter collection from the world famous Franklin Zinc mine, Parker Shaft.
Named in 1916 by William Ebenezer Ford and Walter Minor Bradley from the Greek for "pearl" and "tablet," in allusion to the pearly luster and lamellar structure of the crystallized material. The original specimens were found in 1898, but the mineral remained unnamed for nearly 18 years.
Location Found: Franklin (Type Locality) Year Discovered: 1916 Formula: Pb(Ca,Mn2+)2(Si3O9) Essential Elements: Calcium, Lead, Oxygen, Silicon All Elements in Formula: Calcium, Lead, Manganese, Oxygen, Silicon IMA Status: Valid - first described prior to 1959 (pre-IMA) - "Grandfathered" Fluorescent Mineral Properties
Shortwave UV light: Bright pale blue, often with red zones, less often with white and pink zones Mid wave UV light: Moderately bright red, orange Longwave UV light: Weak red, orange References:
Frondel, Clifford (1972). The minerals of Franklin and Sterling Hill, a checklist. NY.: John Willey & Sons. p.67
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About Us
We have donated many hundreds of amber specimens to museums in the United States and have several dozen new species of insects in amber named after us. We have examined several thousand specimens of rough Burmese amber and have prepped many new Burmese fossil amber specimens. We have traveled to Europe with colleagues to examine unusual spectacular Dominican Amber specimens in private collections and we consider the amber curators of the museums in Santo Domingo, Puerto Plata and New York City our friends. Exploring for and collecting amber along with the examination and research of amber is our passion.
We have been collecting amber in the field and prepping rough fossil amber specimens since 1993. Photographs of our specimens have appeared in National Geographic, Nature, Science, Scientific American, Discover, Time, Newsweek, The New York Times and others. We have been featured in BBC’s production, PaleoWorld's The Amber Hunters. We offer authentic museum quality Dominican and Burmese (Burmite) Amber display specimens of rare insects in amber and also authentic rare rough unprepared amber for sale. We have traveled many times to the Dominican Republic where we have chiseled beautiful amber gemstones out of the lignite layers deep in the amber mines north of Santiago. We have excavated in the Palo Quemado and Los CaCaos blue amber mines and also in La Nueva Toca and the world famous La Toca amber mines way up in the mountains north of Santiago. For many years we have extensively collected mid Cretaceous New Jersey amber in the Raritan formation of central New Jersey and have traveled many times to collect late Cretaceous and early Paleocene amber in the Hanna formation of eastern Wyoming. We have collected mid Cretaceous amber in the Black Creek formation of eastern North Carolina and we have spent weeks collecting mid Cretaceous amber in the northern most Tundra of Alaska. Some of our collecting trips have been in October of 2003 to the western Aleutian Islands some 1000 miles west of Anchorage to explore and collect Miocene amber, August of 2004 and April of 2006 we were back in the Dominican Republic to collect Miocene amber from the Palo Quemado amber mines which have recently closed due to the miners finding little amber, we were back to the Dominican Republic in April of 2006 to video in the La Toca amber mines, and in August of 2007 we excavated in La Toca and La Bucara. We’ve collected Eocene amber in western Indian in the Cambay amber formation. We've done excavations in the Dominican Republic in 2012, 2014, and 2016. Most Recently we have just returned from 2 collecting trips to a Eocene amber deposit in the southern United States in 2017 and in late summer 2018 we revisited a historic amber site in the south east that we've collected at in the 1990's. We're back to the Dominican Republic in early April of 2019.
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