Mineral Specimens from the Lead Mine Road Gash Veins,

Macomb, New York

 

       

              Dolomite on Calcite                                              Dolomite                                   Dolomite pseudo. after Rossie Habit Calcite Twin                             Calcite Twin

 

This newly (2015) discovered location is a road side occurrence within the town of Macomb, St. Lawrence County, New York.  The site was initially quite productive but quickly worked heavily and appears to be depleted of its best material.  The  two veins found there produced very high quality dolomite clusters of a cream color.  The crystals were large, nicely formed, and high in luster.  Also found were interesting dolomite pseudomorphs of dolomite after calcite.  Other minerals include calcite, pyrite, chalcopyrite and clear quartz.

 

 

 

OKN-516

OKN-516     Dolomite      Lead Mine Road Gash Vein, Macomb, St. Lawrence County, New York.  Collected by Michael Walter, 2015.  2.7 x 2.2 x 1.3 cm partial section of a cast showing epitactic growth on both sides.  Only a representative specimen.  No damage.  $10

 

 

 

 

 

 

OKN-517

OKN-517     Dolomite      Lead Mine Road Gash Vein, Macomb, St. Lawrence County, New York.  Collected by Michael Walter, 2015.  3.2 x 2.2 x 1.4 cm plate of large well formed, lustrous dolomite crystals.  No damage, minor calcite overgrowth.  Floater. Uncommon quality for this common species.   $25

 

 

 

 

 

 

OKN-518

OKN-518     Dolomite Cast after Calcite    Lead Mine Road Gash Vein, Macomb, St. Lawrence County, New York.  Collected by Michael Walter, 2015.  3 x 2.4 x 1.6 cm cast after calcite.  No damage.  Floater excluding surfaces that encrusted the calcite. Uncommon quality for this common species.   $30

 

 

 

 

 

 

OKN-519

OKN-519     Dolomite Cast after Calcite   RESERVED   Lead Mine Road Gash Vein, Macomb, St. Lawrence County, New York.  Collected by Michael Walter, 2015.  2 x 1.9 x 1.2      cm cast after calcite.  No damage.  Two generations of growth (first in epitaxy after the calcite and second, larger better crystals, with random orientation).  Floater excluding surfaces that encrusted the calcite. Uncommon quality for this common species.   $30

 

 

 

 

 

 

OKN-527

OKN-527     Dolomite Cast after Calcite      RESERVED     Lead Mine Road Gash Vein, Macomb, St. Lawrence County, New York.  Collected by Michael Walter, 2015.  3 x 1.9 x 1.2      cm cast after calcite.  No damage.  Two generations of growth (first in epitaxy after the calcite and second, larger better crystals, with random orientation).  Floater excluding surfaces that encrusted the calcite.  Minor calcite overgrowhs,  Inside of cast is fully crystallized too.  Unusual for sure.  Uncommon quality for this common species.   $40

 

 

 

 

 

 

OKM-730

Dolomite casts after calcite

OKM-730     Dolomite with Dolomite casts after Calcite on Calcite     Lead Mine Road, Macomb, St. Lawrence County, New York.  Reference the Mineral News, June 2015 for a full description of this material and the location.  A new find of what may turn out to be the nicest dolomite found in St. Lawrence County.  Normally, just an accessory species these dolomites are fine enough to stand on their own as collectable mineral specimens.  This large specimen shows two different generations of dolomite on ugly calcite.  The first is in the form of casts over rhombs visible on the lower left of the first image and in the close-up.  The second generation are fine saddle shaped crystals to 1.5 cm each most of which form a fish scale like overgrowth on the largest calcite rhombs.  Obviously not just dolomite but an interesting paragenesis from a previously unknown location that is also attractive.  No damage.  Measures 11 x 9.2 x 5 cm.  An excellent example.   $145

 

 

 

 

OKM-731

 

OKM-731     Dolomite     Lead Mine Road, Macomb, St. Lawrence County, New York.  Reference the Mineral News, June 2015 for a full description of this material and the location.  A new find of what may turn out to be the nicest dolomite found in St. Lawrence County.  Normally, just an accessory species these dolomites are fine enough to stand on their own as collectable mineral specimens.  This cluster measures 4.7 x 4 x 3.5 cm.  The crystals are all large, complex, saddle shaped and of a very high luster.  They are up to 2.6 cm each.  Minor calcite overgrowths on one side.  Small contact where it once grew on a schalenohedral crystal.  No Damage.  Attractive!  $75

 

 

 

 

 

 

OKM-732

 

OKM-732     Dolomite      Lead Mine Road, Macomb, St. Lawrence County, New York.  Reference the Mineral News, June 2015 for a full description of this material and the location.  A new find of what may turn out to be the nicest dolomite found in St. Lawrence County.  Normally, just an accessory species these dolomites are fine enough to stand on their own as collectable mineral specimens.  This cluster measures 4 x 3.2 x 2.6 cm.  The crystals are all large, complex, saddle shaped and of a very high luster.  They are up to 2.2 cm each.  The typical high pearly luster seen with these specimens.  Small contact where it once grew on a schalenohedral crystal.  No Damage.  Attractive!    $35

 

 

 

 

 

 

 

OKM-733

Bottom

 

OKM-733     Dolomite      Lead Mine Road, Macomb, St. Lawrence County, New York.  Reference the Mineral News, June 2015 for a full description of this material and the location.  A new find of what may turn out to be the nicest dolomite found in St. Lawrence County.  Normally, just an accessory species these dolomites are fine enough to stand on their own as collectable mineral specimens.  This is the finest of the clusters and measures 5 x 5.5 x 4 cm.  The crystals are all large, complex, saddle shaped and of a very high luster.  They are up to 1.8 cm each.  The typical high pearly luster seen with these specimens.  Small contact where it once grew on a schalenohedral crystal.  Beautiful rosette form.  No Damage.  Good looking piece!    $125

 

 

 

 

 

 

OKM-734

OKM-734     Dolomite      Lead Mine Road, Macomb, St. Lawrence County, New York.  Reference the Mineral News, June 2015 for a full description of this material and the location.  A new find of what may turn out to be the nicest dolomite found in St. Lawrence County.  Normally, just an accessory species these dolomites are fine enough to stand on their own as collectable mineral specimens.  This cluster measures 3.5 x 3.2 x 2.8 cm.  The crystals are all large, complex, saddle shaped and of a very high luster.  They are up to 2 cm each.  The typical high pearly luster seen with these specimens.  Small contact where it once grew on a schalenohedral crystal.  No Damage.  Attractive!    $35

 

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