Zinc Corp. of America Mines Mineral Specimens,

Gouverneur, St. Lawrence County, New York For Sale

The #4 Mine, Balmat

 

 

       

                                     All the above specimens are cubic magnetites from the 1991-92 find at the 2,500' Level in the #4 Mine                              

 

Probably the most important find for mineral collectors was the discovery of CUBIC magnetites in the Fowler ore body of the #4 mine, 1991-1992. They are the best of their kind (cubic) from anywhere in the world.  The only other previously known cubic magnetites were microscopic.  The cubic form is also accompanied by another rare magnetite form, tetrahexahedral.  Rare for this occurrence are modifications by octahedrons.  The crystals formed in a halite/talc vein that was an anomaly that had not previously, or since, been encountered.  These magnetites rank among the finest and most unique for their species from anywhere in the world.  We have been lucky to acquire specimens directly from miners who worked in the famous ore bodies, miner private collections, as well as fine example from collections we have purchased.  Some a few descriptions, of the many, written about this discovery.  There is also a book on these mines in press.

Cubic Magnetite Crystals from Balmat, New York.  The Mineralogical Record, Nov/Dec. 2010, vol. 41, no. 6, p. 527-537.  Cubic and Tetrahexahedral Magnetite Crystals from the Fowler Ore Body, Z.C.A. Mine, #4, Balmat, St. Lawrence County, New York.  Rocks and Minerals Magazine, May/June 2008, vol. 83, #3, p. 224-239.  Connoisseur's Choice: Magnetite, Z.C.A. Mine, #4, St. Lawrence County, New York.  Rocks and Minerals Magazine, May/June 2008, vol. 83, #3, p. 240-246.  The Collector's Guide to the Minerals of New York State, Chamberlain, C. and Robinson, G.  Schiffer Publishing, p. 89-94.  The History of St. Lawrence County Minerals, Matrix Magazine, vol. 6, no. 3.

 

 

 

 

 

OKO-839

OKO-839     Magnetite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example shows both of the important forms (cubes with tetrahexahedral modifications to faces) in two beautifully formed, damage-free crystals.  It also shows cubes in a second generation of overgrowth in just enough places to be attractive and not distracting. 2.6 x 1.6 x 1.6 cm overall.  On backside corner has a small healed surface.  Minimal base contact.  A very fine example.  Views nicely from any direction.   $150

 

 

 

 

 

OKO-840

OKO-840     Magnetite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example shows only cubes to 1.1 cm on edge in a beautifully formed, damage free cluster.  It also shows cubes in a second generation of overgrowth in just enough places to be attractive and not distracting. 3.4 x 2.4 x 2.4 cm overall.  Excellent crystallization all around and even on base.  Very high luster.  Minimal base contact.  A very fine example.  No damage except from extreme back view which shows a couple chips to cubes.  $220

 

 

 

 

 

OKO-842

OKO-842     Magnetite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example nice cubes in lustrous, beautifully formed, damage free crystals.  3.3 x 2.3 x 2.1 cm overall.  Minimal base contact otherwise a floater.  A very fine example.  Views nicely from any direction.  Very minor blue mineral tack on base.  Some overgrowth by what appears to be calcite.   $240

 

 

 

 

 

OKO-843

OKO-843     Magnetite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example shows both of the important forms (cubes with tetrahexahedral modifications to faces) in several beautifully formed, damage-free crystals.  This cluster measures 2.2 x 1.8 x 1.7 cm.  A cute example that is damage free but, does have base contact.  $150

 

 

 

 

 

OKO-844

OKO-844     Magnetite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example shows both of the important forms (cubes with tetrahexahedral modifications to faces) in one beautifully formed, lustrous, damage-free crystals.  It also has the rare, for this location, octahedral modifications.  The most unusual thing, also uncommon, is that the crystal is tabular.  2.3 x 2 x 1 cm overall.  This one is a floater with no contact or damage.  Minor calcite attachments.  Interesting and viewable from any direction.  A very fine and unusual example.  $300

 

 

 

 

 

 

OKO-845

OKO-845     Magnetite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example shows both of the important forms (cubes with tetrahexahedral modifications to faces) in several well-formed crystals.  It also has the rare, for this location, octahedral modifications.  3 x 1.7 x 1.2 cm overall.  Strong contacts on bottom and back but the front, top and sides view nicely.  $50

 

 

 

 

 

OKO-846

OKO-846     Magnetite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example shows fine high luster cubes to .7 cm on edge and measures 2.2 x 1.7 x 1 cm overall.  Fine on both sides and most edges with some edge contact.  $40

 

 

 

 

 

OKO-847

OKO-847     Magnetite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This one is a floater with a tiny contact or chip on base.  It measures 1.7 x 1.7 x 1.7 cm.  This one shows both of the important forms (cubes with tetrahexahedral modifications to faces).  High luster and great aesthetics.  $65

 

 

 

 

 

OKO-848

OKO-848     Magnetite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This floater measures 1.5 x 1.4 x 1.4 cm.  This one shows both of the important forms (cubes with tetrahexahedral modifications to faces).  High luster and great aesthetics.  A couple of corner chips.  $50

 

 

 

 

 

OKO-849

OKO-849     Magnetite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This piece measures 3.3 x 3.3 x 2.8 cm.  It is a floater but, has several obvious contacts that are partially healed.  $90

 

 

 

 

 

OKO-850

OKO-850     Magnetite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This one is a floater with fine crystallization on all sides.  It measures 2.1 x 2 x 1.5 cm.  This one shows both of the important forms (cubes with tetrahexahedral modifications to faces).  High luster and great aesthetics.  It has great views from any direction and only the tiniest of corner chips to one cube on base. Very high quality!   $125

 

 

 

 

 

OKO-851

OKO-851     Magnetite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  This one is unique in that the single crystal looks almost ball shaped, or rounded.  It is a cube with octahedral modifications and stepped surface growth features.  Crystallographically, very cool!  2 x 1.8 x 1.5 cm.  Damage free floater.  $80

 

 

 

 

 

OKO-852

OKO-853     Magnetite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example shows both of the important forms (cubes with tetrahexahedral modifications to faces) in several well-formed crystals.  3 x 2.4 x 2.3 cm.  Back and base contacts present.  Main views are great with the cubes being well defined, aesthetic, and high in luster.  $140

 

 

 

 

 

OKO-853

OKO-852     Magnetite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example shows both of the important forms (cubes with tetrahexahedral modifications to faces) in several well-formed crystals.  The crystals are large, up to 2.1 cm on edge and the piece measures 3.4 x 3 x 2.3 cm in its entirety.  Base and some of back show healed contacts.  Sits and displays great.  Interesting, showy and robust for a thumbnail sized piece.  $225

 

 

 

 

 

OKO-939

OKO-939     Magnetite and Other species     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example is composed of very high luster, simple cubes with talc/anhydrite/sphalerite mixes filling in between many crystals on the front and less so on the back.  Of course, that depends on which side you will call the "front" because both are excellent.  8.8 x 7.4 x 4.4 cm.  Very minor chipping to a couple cubes on edges only so the piece is in excellent condition, sits well, and displays great.  $250

 

 

 

 

 

OKO-941

OKO-941     Magnetite and Sphalerite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This 8 x 6.8 x 4 cm piece is dominated by a high luster crystal on its top that is partially exposed from within massive anhydrite and calcite.  The main crystal is 1.7 cm on edge and composed of the most desirable forms (cube, tetrahexahedron, and minor octahedral modifications on corners).  The cube is damage free.  On its backside is another attached cube that has strong healed contacts.  So, the back view is less aesthetic.  There are other damage free cubes only partially exposed on the front and back but further work is needed to expose them.  This is an excellent example and a value for the quality of this modern classic.  $375

 

 

 

 

 

OKO-807

OKO-807     Magnetite and Sphalerite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example shows both of the important forms (cubes with tetrahexahedral modifications to faces) in numerous beautifully formed, damage-free crystals.  The sphalerite is minor and on back of the specimen.  The back is composed of healed surfaces.  This one measures 5.7 x 3.1 x 2 cm.  Lots of luster and flash.  No damage.  $195

 

 

 

 

 

OKO-808

OKO-808     Magnetite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example shows both of the important forms (cubes with tetrahexahedral modifications to faces) in numerous beautifully formed, very large, damage-free crystals.  This is actually two complex crystals.  A couple contacts on base and back, elswhere damage-free.  4.4 x 2.7 x 2 cm.  Medium to high luster.  Great piece.  $180

 

 

 

 

 

OKO-809

OKO-809    Magnetite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example shows both of the important forms (cubes with tetrahexahedral modifications to faces) in numerous beautifully formed, damage-free crystals.  Great front, top and sides.  Base and back are contacts.  4.2 x 2.8 x 1.7 cm.  No damage, good luster, sits nicely.  Second generation crystals on one side of piece.  Cubes are up to 1.6 cm each.  $150

 

 

 

 

 

OKO-810

OKO-810     Magnetite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example shows both of the important forms (cubes with tetrahexahedral modifications to faces) in a couple large, beautifully formed, damage-free crystals.  The luster is lower because the tetrahexahedral faces dominate (and they always tend to have lower lusters).  4 x 3.3 x 2.2 cm.  Base and minor edge contacts.  Everything else is well crystallized and free of damage.  $200

 

 

 

 

OKO-811

Back

OKO-811     Magnetite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example shows both of the important forms (cubes with tetrahexahedral modifications to faces) in numerous beautifully formed, damage-free crystals. The fron shows some anhydrite.  4.2 x 3.8 x 2 cm.  Some anhydrite on front.  Damage free front, back has one chipped area and one large healed contact.  Nice luster.  Attractive specimen.  $300

 

 

 

 

 

OKO-812

OKO-812     Magnetite and Sphalerite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example shows both of the important forms (cubes with tetrahexahedral modifications to faces) in numerous beautifully formed, damage-free crystals.  Minor clear sphalerite.  3 x 2.9 x 2.6 cm.  Several nice display faces showing great crystals and high luster.  Bas and back are contacts.  A couple tiny contacts low on one display face.  Can be shown several different ways.  $180

 

 

 

 

 

OKO-801

OKO-801     Magnetite and Sphalerite    2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example shows simple cubes in beautifully formed, damage-free crystals.  Surrounding these are tiny sphalerites and second generation cubes.  Everything sparkles.  3.7 x 2 x 2 cm.  Only frontal view is crystallized.  Damage free.   $70

 

 

 

 

 

OKO-802

OKO-802     Magnetite and Sphalerite    2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example shows cubes in beautifully formed, damage-free crystals.  With these are clear sphalerites to .4 cm each (this is unusually large for the occurrence).  5 x 4.3 x 3.2 cm.  This is a very three-dimensional piece with many surfaces showing fine, damage free, high luster crystals.  $275

 

 

 

 

 

OKO-803

OKO-803     Magnetite and Sphalerite    2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example shows cubes in beautifully formed, exceptionally high luster crystals.  3.7 x 3 x 1.8 cm.  Two small chips.  Nice sphalerites in clear, white and amber colored crystals.  Very showy.  $200

 

 

 

 

 

OKO-804

OKO-804     Magnetite and Sphalerite    2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example shows cubes in beautifully formed, exceptionally high luster crystals. 5.8 x 3.6 x 2.6 cm.  Damage-free.  Nice sphalerites in clear, white and light raspberry colored crystals.  Very showy.  $295

 

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