home

minerals
new arrivals
browse list
search/filter

ordering

news

about

links

contact

 

 

catalog listings

search/filter
 

search
16 specimens listed
Page   1 | 2 |

Copper in and on Calcite USA Classic
stock #18-AX-12-460
Keweenaw Co.
Michigan, United States
5.3 x 3.4 x 2.7 CM (cabinet)
price: $1150
Spring 2020

An excellent vintage Copper in Calcite from the famed Philadelphia Academy collection, and retains their original label. This also has labels from Collectors Edge and Carter Rich, and was for a time in the William Hladysz collection. The matrix here is mostly clear Calcite in clusters of crystals more or less aligned. The clear Calcite are colored red-brown by large amounts of included copper easily seen inside the crystals. In several areas the Copper crystals extend outside the Calcite. The main crystal is 1.2 CM and very well formed. In excellent condition, and much better looking in person.
Polianite (Pyrolusite Pseudo after Manganite)
stock #18-AX-10-869
Alberta, Baraga County
Michigan, United States
8 x 5.5 x 3.1 CM (cabinet)
price: $160
Spring 2020

A choice Michigan specimen with sharp black-silvery crystals that are a perfect replacement of Manganite. Most likely from the Taylor mine but there is no documentation of that detail. From the Palmer collection that was assembled in conjunction with the late Dr. Joe Mandarino for use in his research and publications. The crystals are quite sharp and lustrous reaching to 1 CM some are also free standing.
Copper
stock #1003-JM-1428
Cliff Mine, Pheonix, Keweenaw County
Michigan, United States
16.1 x 2 x .5 CM (cabinet)
price: $220


An antique native copper "finger" or "fan blade" made by skilled hand chiseling long ago. These artifacts were made by miners from the often huge masses of pure Copper encountered in the Upper Penninsula of Michigan. From the John Marshall collection, this is recorded as from the Cliff Mine, such attributions of these artifacts are quite uncommon. Aside from the very hard labor of hammering through solid copper, these fingers required a lot of skill to create such a long straight and clean blade. While not a typical mineral specimen this is a very much a classic Native Copper that has had a major trimming job!
Copper in Calcite- vintage specimen ex Museum
stock #15.1-507
Quincy Mine, Hancock, Houghton County
Michigan, United States
5.7 x 3.7 x 2.4 CM (cabinet)
price: $350
Worldwide mix summer

Calcite crystals richly included by Copper in branching clusters which gives the Calcite a distinctive color. A very old Dartmouth College Museum and a Carl Bentley labels are included. some Copper is seen outside of the Calcite as well. Choice, minimal damage on outer edges but all the main Calcite is clean and undamaged. A good USA classic copper specimen that is far more affordable than typical.
Silver - branching crystals with Calcite
stock #AX-30-070
White Pine Mine, Ontonagan County
Michigan, United States
4.1 x 2.6 x 1 CM (miniature)
price: $800
Spring update

A native Silver crystal tree with contrasting white Calcite scattered on the branches. Classic specimen from the famed White Pine Mine of Michigan. The crystals are typically crude but distinct enough to see the basic forms well. No damage and displays well, a choice miniature with character.
Copper-Fine Spinel twins, Herringbone crystals
stock #18.1-117
Phoenix Mine, Phoenix, Keweenaw County
Michigan, United States
5.9 x 2.6 x .7 CM (cabinet)
price: $500
Spring update

Wonderful esthetics! Slender wires in branches holding spinel twinned Copper crystals in Herringbone arrays. A very old specimen from the famed Phoenix mine, in perfect condition. A superb, textbook example of these habits that is much more delicate than most Phoenix specimens. Under magnification it seems a small dab of Silver is present as well as a small modified cube. It is remarkable that this piece has remained intact.
Copper with and in Calcite
stock #15.1-892
West Vein, Phoenix Mine, Phoenix, Keweenaw County
Michigan, United States
6.8 x 3.4 x 2 CM (cabinet)
price: $700
Pre Holiday 2017

Esthetic and not typical at all! Native Copper in leafy tendrils holds and is inside very clear crystals of Calcite. The Calcite is in blocky cube forms with complex growth hills on some faces and colored by the inclusions a bright Copper hue. The Calcites are glassy and the whole composition is very attractive. Some contacts are noted mostly on the backside of the specimen, overall in fine condition. I have not seen another of this style in many years.
Copper- large crude crystals with Silver
stock #13.1-407
Calumet and Hecla Mine, Calumet, Houghton County
Michigan, United States
4.7 x 3.7 x 3 CM (miniature)
price: $250
Spring 2017

An old specimen from Houghton County with sizable (2 CM) distinct yet crude crystals standing above a mostly Copper matrix. Some sharp faces are seen but overall the crystals are very distorted. A few spots of Native Silver are also seen with magnification.
16 specimens listed
Page   1 | 2 |