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8 specimens listed
Page   1 |

Datolite (color change) and Heulandite
stock #8.1-208
Prospect Park Quarry, Prospect Park, Passaic County
New Jersey, United States
5.1 x 3.2 x 2.8 CM (small cabinet/ large miniature)
price: $250
Spring 2020

Datolite with a strong color change from artificial to daylight, the color goes from a dark olive-green to a yellow-grey. From a remarkable pocket at the classic Prospect Park Quarry locality in 2008, there were not many pieces found. This has contrasting Huelandites with a warm brown color and shows the uncommon color change phenomenon very well. The Datolite is transparent with many faces being very glassy. There is contacting and bruising that can be hidden fairly well by display angle, so not for perfectionists. Overall the condition is equal to the best I have seen from this find, and a cute Northeastern USA oddity.
SOLD Franklinite, single complete octahedron
stock #SOLD 15.1-628
Franklin Mine, Franklin Mining District, Sussex County
New Jersey, United States
2.9 x 2.7 x 2.1 CM (thumbnail)
price: $0
Spring 2020

A single black octrahedral crystal from vintage 1930's ex. Warren Johansson collection. Dr Johansson was a prolific field collector and active trader well into his nineties. His label is with the specimen. Very nice face modifications and a slight melted look as is classic for the specie. Most Frankinites have considerable damage or are incomplete, but this one is all there, with only minor edge rough spots and one clean contact. Of course this is from the type locality which is really the only source of any sizable crystals worldwide, yet these were at one time plentiful in Franklin. A nice piece that can fit a Thumbnail box but just barely.
Andradite (var. polyadelphite)
stock #19.1-516
Franklin/ Sterling Hill
New Jersey, United States
4.8 x 4.1 x 3.8 CM (miniature)
price: $290
Spring 2020

Sharp Franklin New Jersey Garnets with the Orange-Brown color that was once called Polyadelphite. This is a Mg rich type of Andradite, but it is not recognized as a separate specie and the name is not used as much now. This is an old specimen, there are several collection numbers and one handwritten label attached. The main Garnet is 2.3 cm across, the form is quite good and relatively complete for one of these. Classic Franklin material this looks like others I have seen from the Buckwheat but there is no further information. A choice Franklin crystal.
Willemite -red to pink crystal in Calcite
stock #AX-12-581
Franklin Mine, Franklin Mining District, Sussex County
New Jersey, United States
6.2 x 4.2 x 3.1 CM (cabinet)
price: $285
Spring 2017

A nice classic Franklin, New Jersey Willemite crystal well exposed on Calcite. Vivid fluorescence, sharp prism faces and not acid etched out of the matrix (which was usually done but looks melted and is less desirable). The crystal is typically crude and slightly rounded on some edges with natural cracks but no repairs.
Stilbite -Radial type-classic locale
stock #15.1-523
Paterson
New Jersey, United States
7.2 5.6 x 2.5 CM (cabinet)
price: $140
May 2015

An old Schortmann's specimen circa 1948-50 from the Patterson New Jersey area. The radial ball of Stilbite is 3.2 CM across and nicely exposed. This sort of esthetic is not very common from this classic locale best known for Prehnites. In fine condition.
Rhodonite on Calcite with Franklinite
stock #9.1-251
Franklin Mine, Franklin Mining District, Sussex County
New Jersey, United States
4 x 2.9 x 2.8 CM (miniature)
price: $260
May 2015

A complete 2.9 CM crystal of Rhodonite is perched above a smaller 2.3 CM crystal resting on Calcite matrix. Nicely exposed, the Calcite has not been acid "melted" so this is fully natural. An affordable classic specimen with good color, form and in nice condition, these are getting quite
Rhodonite (Blocky crystals with minor Franklinite, Calcite)
stock #13.1-041
Franklin Mine, Franklin Mining District, Sussex County
New Jersey, United States
4.6 X 3.8 X 3.1 CM (miniature)
price: $380
Spring 2014

A cluster of five main Rhodonite crystals up to 3.3 CM in size are arranged in an attractive cluster. This is an American classic that has become quite scarce on the market in recent years. The condition is excellent and like most of these had some acid etching to expose the Rhodonite well. The color is well above average and this piece is very 3 dimensional.
Datolite-color change & Heulandite
stock #8.1-208
Prospect Park Quarry, Prospect Park, Passaic County
New Jersey, United States
5.0 x 3.1 CM (miniature)
price: $95
Spring 2013

The yellow to green color change occurs between incandescent, flourescent and daylight. Lusterous crystals the largest measuring 2.9 CM with contact on the bottom of the crystal. From a 2009 find.
8 specimens listed
Page   1 |