Connecticut Mineral Specimens For Sale

 

   

                            Calcite on Quartz                                                          Calcite, Quartz, Prehnite                                                                                                        Quartz

 

We have been lucky enough to acquire some of the finest examples of Connecticut minerals directly from the field collectors who have gained legal access to the active quarries as well as numerous older collections built in the 1960s through the 1990s.  If you are a serious East Coast or Connecticut collector it might be worth your while to contact us regarding better materials which we show by enquiry only.

 

 

 

OKO-475

OKO-475    Almandine     Greens Garnet Farm, Roxbury, Connecticut.  Ex. Paul and Dawne Dunning collection.  This is a very attractive example of this once common material.  It measures 3 x 2.7 x 1.4 cm and is in very god condition with only a tiny contact from schist on the large crystal and a small ding on the small crystal.  Well exposed with good views from all directions.  Mounted in a perky box.  $30

 

 

 

 

 

OKO-400

OKO-400      Quartz     New Britain, Connecticut.  Ex. Paul and Dawne Dunning collection.  3.3 x 2.8 x 2.7 cm crystal.  Tiny mico tip ding that is difficult to detect.  The piece is translucent and has excellent form.  So Styrofoam on base.   $25

 

 

 

 

 

OKO-401

OKO-401      Tourmaline     Connecticut.  Ex. Paul and Dawne Dunning collection.  This highly striated tourmaline appears to be a deep green to black color, is not terminated and is mounted in a perky box.  3 x 1 x .9 cm.  $15

 

 

 

 

 

OKO-997

OKO-997     Datolite     Roncari Quarry, East Granby, Connecticut.  Ex. Paul and Dawne Dunning collection.  This example composed of beautifully formed, clear, high luster crystal high on a section of matrix.  It measures 3 x 2.3 x 2.2 cm and is quite flashy.  No damage.  $35

 

 

 

 

 

OKO-196

OKO-196    Stilbite    Road Cut near Thomaston Dam, Connecticut.  Ex. Dr. Steve Chamberlain collection.  A fine crystal (minor bowtie form) crystal on matrix.  No damage.  Very uncommon material.  Classic East Coast specimen.  $50

 

 

 

 

 

OKJ-888

OKJ-888       Natrolite      Cheshire, Connecticut.  Ex. Paul and Dawne Dunning collection.  An interesting spray of acicular, clear crystals to 1.5 cm each.  Unusual location.  2.3 x 2 x 1.4 cm.  No damage.  Mounted in a perky box.    $25

 

 

 

 

 

 

OKN-598

OKN-598    Fluorite    Thomaston Dam Site, Thomaston, Connecticut.  Ex. Paul and Dawne Dunning collection.  Typical example as seen here.  This one is light purple measuring 2.7 x 2.1 x 1.4 cm.  No damage.  Closed location.  $20

 

 

 

 

 

 

OKL-166

OKL-166    Beryl     Gillette Quarry, Haddan Neck, Connecticut.  Ex. Dr. Steve Chamberlain Collection.  A 1.9 x 1.5 x 1.4 cm example that is double terminated (base is only partially terminated.  In good condition.  Light green color, high luster and minor gemmy areas.  Excellent for the location.  $45

 

 

 

 

 

OKL-800

OKL-800     Sphalerite and Quartz on Galena       Rt #25 Road Cut, Trumbull, Connecticut.  Ex. Thomas Fowler collection.  2.5 x 2.1 x 1.6 cm specimen with galena cubes to 1 cm on edge.  Bright translucent sphalerites on the galena with clear quartz points.  Galena corners look not to be fully formed... patina is consistent (I don't think this is damage but I might be wrong).  Mounted in a perky box.  Attractive and unusual and nice for the location.  $90

 

 

 

 

 

OKG-119

OKG-119     Apophyllite on Calcite and Quartz      Roncari Quarry Tilcon Quarry), East Granby, Hartford, Connecticut. 6 x 5.6 x 3.5 cm specimen with a nice mix of species.  The apophyllite balls rest on top section of calcite with quartz points.  Edge contacts and one spot with an apophyllite ball missing.  Not distracting, just not very noticeable at all.  A good example of less common material from this important find.  $145

 

 

 

 

 

 

 

OKG-098

OKG-098     Apophyllite on Datolite      Roncari Quarry Tilcon Quarry), East Granby, Hartford, Connecticut.  At attractive plate of transparent datolite crystals with balls of clear to white apophyllites.  Really nice luster.  Showy!  A very tiny cleave to a datolite in the center if piece.  Very minor damage for a large example like this.  This is an old timer from the early days of collecting at this locality.  13 x 8.5 x 3.5 cm.  $395

 

 

 

 

 

 

OKL-134

OKL-134    Sphalerite, Quartz     Trumbull, Connecticut.  Ex. Thomas Fowler collection.  A large, for the location specimen with small translucent sphalerites and milky quartz.  Good luster and no damage.  7.6 x 4 x 2.5 cm.  Mounted in a large perky box.  $150

 

 

 

 

 

 

OKL-135

OKL-135     Columbite      Biermann Quarries, Bethel, Fairfield, Connecticut.  Ex. Thomas Fowler collection.  A large, mostly complete crystal which appears to be twinned.  It measures 6 x 3.6 x 3.3 cm overall.  No damage just matrix contacts.  An unusual New England find.  $950

 

 

 

 

 

 

OKI-409

OKI-409     Apophyllite on Prehnite     Southbury, Connecticut.  Ex. Anthony Dunn collection.  The specimen seen here is a floater, less one very thin area of contact.  The contact is right by my thumb in the second image.  5.2 x 4 x 3.1 cm.  Great miniature for this locality.  The snow white apophyllites are nice for luster and form.  A good east coast or New England piece.  $70

 

 

 

 

 

 

OKG-020

OKG-020    Prehnite on Calcite Scepter      Roncari Quarry (Tilcon Quarry), Granby, Hartford County, Connecticut.  Hematite stained and green balls of prenite girdle the stem of this scepter.  The calcite is actually quite clear but the surface frosting and modifications make seeing into it difficult.  A few select faces are clear.  This one measures 6.7 x 4.5 x 4.5 cm.  Two very tiny touch marks are not distracting (could be oiled to hide).  $200

 

 

 

 

 

 

OKI-745

OKI-745   Chalcopyrite on Calcite and Quartz        Roncari Quarry (Tilcon Quarry), Granby, Hartford County, Connecticut.  Hematite stained and included calcites and quartz crystals make up this fine 9.4 x 5.2 x 4 cm piece.  This is basically one ling double terminated calcite of great complexity with a second calcite at one termination.  Several brassy chalcos to about 3 millimeters each.  Minor base contact, some minor healed surface area.  No damage.  The calcite is actually quite clear but the surface frosting and modifications make seeing into it difficult.  A few select faces are clear.  Fantastic example... fantastic quality, higher luster than the images indicate although most surfaces would be described as having a satin like luster, some are glassy.  $900

 

 

 

 

 

 

OKG-096

OKI-745   Calcite and Quartz        Roncari Quarry (Tilcon Quarry), Granby, Hartford County, Connecticut.  Beta form quartz crystals in small groups spread out over the entire surface of this specimen.  It measures 7.3 x 4.5 x 1.7.  The first generation quartz (and calcite) is yellow from hematite while the second generation, the larger clumps of crystals , are gray.  There is a rare butterfly twin lying on edge.. seen in lower left of first image.  Zero damage.  An unusual specimen for this location.  $285

 

 

 

 

 

 

OKL-132

OKL-132    Fluorite, Cerussite, Sphalerite    Trumbull, Connecticut.  Ex. Thomas Fowler collection.  Two cubes a green and a blue on a matrix coated by tiny cerussites and sphalerite.  7 x 4.4 x 2.1 cm with each cube being approx. .9 cm on edge.  The green cube had one side growing against matrix.  All corners on blue cube are not fully formed, I do not believe they are damaged.  Even the non-exposed corners show this same development.  A really good quality specimen for the location.  $175 

 

 

 

 

 

 

OKL-739

OKL-739    Prehnite    O & G Quarry, Woodbury, Connecticut.   Ex. Thomas Fowler collection.  A nice example in a perky box.  High luster with a few scuffs.  4.5 x 3.5 x 1 cm.  $15

 

 

 

 

 

 

OKL-737

OKL-737    Tourmaline in Cleavlandite    Strickland Quarry, Collins Hill, Portland, Middlesex County, Connecticut.  Ex. Thomas Fowler collection.  The tourmaline crystal is a nice green color, well terminated, and rests between the blades of feldspar.  It is 2 cm long, undamaged and has a slight curve.  The cleavlandited are chipped to expose the tourmaline.  A nice example in a perky box.   $40

 

 

 

 

 

 

OKAA-044

OKAA-044    Calcite, Quartz, Hematite    Roncari Quarry, (Tilcon Quarry), East Granby, Hartford County, Connecticut.  This fine piece came from what was dubbed the "Halloween Pocket".  It measures 12 x 10 x 5.2 cm overall with calcites to 6.3 cm.  The largest calcite in the center of the specimen is double terminated.  Many small hematite halos on the calcites and some of the quartz.  The only damage is one calcite being cleaved and it is not distracting.  Nice contrasts, luster and interesting form to the calcites.  Mounted on a custom engraved acrylic base but the piece stands well on its own in the same position without aid.  $625

 

 

 

 

 

 

OKAA-045

OKAA-045    Calcite    Roncari Quarry, (Tilcon Quarry), East Granby, Hartford County, Connecticut.  This is composed of two twinned crystals but the real noteworthy one is the large, double terminated crystal making up the bulk of the specimen.  The piece measures 8 x 5 x 4.9 cm.  The crystals are on a thin crust of matrix and it sits nicely without assistance.  The crystal is mostly clear internally but with its satin finish it is difficult to reflect this in the images.  Views nicely from all sides.  Damage free.  Crystals of this type were uncommon from the location.   Mounted on a custom engraved acrylic base.  Excellent value.  $350

 

 

 

 

 

 

OKAA-046

Back

OKAA-046    Hematite on Quartz and Calcite    Roncari Quarry, (Tilcon Quarry), East Granby, Hartford County, Connecticut.    This is definitely what a museum grade specimen from Connecticut looks like.  I hand it is a thing of beauty measuring 16 x 12.2 x 7.5.  It stands upright on its own and is amazingly aesthetic.   The calcites are the most common for the find however they are unusually large (to over 8 cm each) and have the satin luster with hematite included areas, also common to the find.  At a quarry such as this one that blasts, to see a specimen of this size without any notable damage is a rarity.  There are a couple very tiny marks but you will need to break out a lope and search for them.  It displays as damage free from any view, and every view is nice.   Mounted on a custom engraved acrylic base.  This is a top New England specimen at a fraction of what specimens of this caliber normally sell for on today's mineral market.   Mounted on a custom engraved acrylic base.  $2,400

 

 

 

 

 

 

OKAA-047

OKAA-047      Quartz and Calcite    Roncari Quarry, (Tilcon Quarry), East Granby, Hartford County, Connecticut.  This specimen is a baseball size and shaped piece that is the end of a stalactitic growth.  The coating of calcite crystals is on all sides except the base and the quartz points coat the majority on one side.  It measures 8.5 x 8 x 6.5 cm.  There are two tiny missing quartz points and a couple cleaved calcite... all of which you will have to search for to find.  Excellent quality!  Mounted on a custom engraved acrylic base.  $400

 

 

 

 

 

 

OKAA-048

OKAA-048      Quartz and Calcite    Roncari Quarry, (Tilcon Quarry), East Granby, Hartford County, Connecticut.  Another pocupine like specimen with high luster and aesthetics... The coating of calcite crystals is on all sides except the base and the quartz points coat all of the front display face of the specimen.  It measures 11.5 x 9.4 x 7 cm.  There are two tiny missing quartz points with only one being visible to the eye and not at all distracting.  There is some rubbing tot he calcite on the back.  Again, excellent quality.  Mounted on a custom engraved acrylic base.  $550

 

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