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25 specimens listed
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Copper in Calcite with Epidote, Microcline and Pumpellyite
stock #21.1-322
Houghton County
Michigan, United States
4.8 x 4 x 4.1 CM (miniature)
price: $170
Late Summer 2021

Some masses of native copper mixed with gem clear Calcite crystals, most of which are richly included. A complex specimen on an amygdaloidal basalt matrix having many cavities filled with micro crystals. These vugs hold many Epidote crystal clusters most being on contrasting salmon colored crystals of Microcline. Good looking by naked eye but really amazing with magnification, this has a good mixture of species and is classic upper Michigan material. Unfortunately we have no mine attribution but this looks like a perfect match to the famed Quincy Mine.

Ripidolite (Clinochlore) pseudo after Garnet
stock #AX-19-122
Spurr Mine, Imperial Heights, Baraga County
Michigan, United States
2 x 1.8 x 1.7 CM (thumbnail)
price: $80
Early summer 2021

A complete 360 degree Garnet crystal fully replaced by the Ripidolite (var. of Clinoclore) with a tiny sliver of matrix. A classic from Michigan, these were at one time called Aphrosiderite, and the replacing materials were usually referred to as Chlorite. This thumbnail is quite sharp and has kept some small edge modifications seen on some faces. The source of this one is the Spurr Mine, most others we have seen do not have specific localities.

Pyrolusite - well-formed crystals, vintage
stock #21.1-047-(JM-4339)
Ahmeek Mine, Ahmeek, Keweenaw County
Michigan, United States
8.3 x 6.7 x 3.7 CM (cabinet)
price: $170
Early summer 2021

A choice old specimen of Pyrolusite from upper Michigan copper country. The old labels and documents all list this as an Akmeek Mine specimen, but Pyrolusite is not noted from that mine, although it does occur nearby. Our sources seem very certain this is actually from the Taylor Mine and a fine example from that locality, with typical matrix. We are listing this using the original label locality rather than change this attribution. Either way a choice piece with well-formed, shiny metallic crystals of what is usually a sooty black and ugly mineral. The crystals are protected in vugs on both sides of the matrix and up to 1.5 CM. From a classic region, these are some of the best of the specie from this zone. Ex Ernie Schlichter and John Marshall collection, also with an unattributed very old label.

Copper in and on Calcite (historic, classic)
stock #20.1-519-(304)
Cliff Mine, Pheonix, Keweenaw County
Michigan, United States
6.7 x 5.7 x 2.4 CM (cabinet)
price: $900
Early summer 2021

An important vintage specimen from the famed Wallace Gould Levison collection that he obtained at the mine in 1863. Aside from being old, this is an especially attractive specimen with sharp, clear and mostly transparent Calcite reaching 2 CM. These contain and surround crystalized Copper. The Copper crystals on the surface are well-formed some being dodecahedral and up to 8MM in size. Levison made only one trip from NY City to the Upper Peninsula of Michigan in 1863, he obtained a few nice specimens but never returned. He kept meticulous notes and we will include a copy of the relevant page from his handwritten collection ledger for this specimen. Levison was a dedicated collector, mineralogist, author and inventor active during the 1862-1921 era. His handwritten label is affixed to the back of the specimen. A classic Cliff Mine piece with excellent provenance!

Copper with Malachite and Analcime
stock #16.1-450-(CN4044)
Cliff Mine, Pheonix, Keweenaw County
Michigan, United States
6.9 x 5.8 x 5.9 (cabinet)
price: $1250
Early summer 2021

A cluster of Copper crystals of many sizes, most being complex dodecahedrons. Malachite encrusts the Copper making a great color contrast. Scattered small Analcime crystals, a few of which are transparent, add a further contrast. An older specimen, ex. Charles M. Noll collection, this displays well from any angle. Close exam shows the smallest Copper crystals are super sharp, textbook perfect nestled between the medium and large sized crystals that are a little more crude though still distinct. A fine Michigan Copper that is a bit different and is especially showy in person.

Copper - elongated spinel twin chains
stock #AX7-048-(647)
White Pine Mine, Ontonagan County
Michigan, United States
9.7 x 3 x 1.9 CM (cabinet)
price: $660
new year 2021

Elegant branching tendrils of Copper in a treelike tangle from the White Pine Mine. Close exam shows these to be delicate chains of elongated Copper crystals. This locale is a classic locality for fine Copper and Silver specimens, this one is especially esthetic, and has a nice patina. Ex Larry White collection, Larry had excellent taste for native metals and esthetic compositions. The White Pine mine was famed for its spectacular branching coppers. Specimens like this piece are very very different from most other locales in the Upper Peninsula, and for that matter anyplace else.

Copper - branching crystals on matrix
stock #20.1-824
Cliff Mine, Pheonix, Keweenaw County
Michigan, United States
6.2 x 3.6x 2.5 CM (cabinet)
price: $80
new year 2021

A tree of crudely crystallized Copper 3.5 CM tall branches from this blocky matrix. A few small chunks of colorless Calcite are on some branches as well, adding some contrast. The Copper branches are locked in the matrix along a line of small holes and are able to be moved several degrees but are still firmly held. The movement of the copper on the matrix is an oddity and not at all common.

Silver and Copper (halfbreed)
stock #14.1-269
Caledonia Mine, Mass City, Ontonagon County
Michigan, United States
2.2 x 1.7 x 1.2 CM (thumbnail)
price: $110
new year 2021

A US classic a choice Halfbreed of Silver and Copper that shows perfectly the two metallic colors with very bright luster. Looks fine on all sides, the Halfbreed masses from this region are unlike anything from other places. The copper mined in the Upper Pennisula of Michigan tended to have some small percentage of Silver mixed in. This was especially desirable in the early manufacturing of electrical wires.