Connecticut Mineral Specimens For Sale, Page 2

 

   

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.

 

 

 

OKAA-049

OKAA-049    Calcite on Quartz Casts after Anhydrite    Roncari Quarry, (Tilcon Quarry), East Granby, Hartford County, Connecticut.  This type of specimen is what will eventually lead to the material from this quarry being a classic.  The quartz making the casts after anhydrite are larger and hematite coating, creating a wonderful contrast.  The calcites have selective face coatings, are often double terminated and lustrous.  There is lots to take in regarding this fine piece so I will let the images do most of the talking.  14.5 x 9.2 x 8.5 cm.  Material internal to the opening is damage free and the edge contacts are no bad either.  A fantastic example of what I would believe most collectors would consider the most interesting and aesthetic material to come from this important find.  Mounted on a custom engraved acrylic base.  $1,650

 

 

 

 

 

 

 

OKAA-050

OKAA-050    Calcite on Calcite coated Stalactites    Roncari Quarry, (Tilcon Quarry), East Granby, Hartford County, Connecticut.  A large (6 cm) double terminated calcite on the end of several parallel growth stalactites coated by smaller calcites.  Rich hematite staining adds nice contrast to the calcite so its complex nature can be better appreciated.  Backside has a tiny contact only a couple millimeters in size.  Front, sides, top all view as damage free.  6 x 5.2 x 2.5 cm.  Mounted on a custom engraved acrylic base.  You'd have a hard time finding a dealer who would make the base for this price!  $250

 

 

 

 

 

 

 

OKAA-051

OKAA-051    Calcite on Quartz Casts after Anhydrite    Roncari Quarry, (Tilcon Quarry), East Granby, Hartford County, Connecticut.  This type of specimen is what will eventually lead to the material from this quarry being a classic.  Numerous large casts which show openings so their interiors can be viewed.  A complex group measuring 7.5 x 6.2 x 4 cm.  Only a couple tiny (basically micro) points missing.  Excellent condition overall.  Mounted on a custom engraved acrylic base.  $425

 

 

 

 

 

 

 

OKAA-052

Base

OKAA-052    Calcite     Roncari Quarry, (Tilcon Quarry), East Granby, Hartford County, Connecticut.  Large gemmy double terminated calcites growing on stalactites.  Interesting and aesthetic!  7.4 x 6.2 x 5.3 cm.  Only one minor contact on one end otherwise in great condition.  Some faces are slightly frosted, some are glass clear and of a higher luster.  Internally there are fractures but much of the crystal's interiors are clear.  Uncommon for the find and for the quarry.  Mounted on a custom engraved acrylic base.  $550

 

 

 

 

 

 

OKL-756

OKL-756     Sphalerite, Quartz, Fluorite and Pyrite      State Rt #25 Road Cuts, Trumbull, Fairfield County, Connecticut. Ex. Thomas G Fowler Collection. 8.1 x 4 x 3.7 cm overall with lots of small crystals no larger than a cm intergown in this well crystallized piece. Almost a floater with minimal contact and no damage. Fluorites are obscured within the other waves of crystals. Uncommon in this good a quality. Minor Styrofoam attachments on one side. Nice. $165

 

 

 

 

 

 

OKL-757

OKL-757     Sphalerite, Quartz      State Rt #25 Road Cuts, Trumbull, Fairfield County, Connecticut. Ex. Thomas G Fowler Collection. A 4.5 x 4.2 x 2.7 cm floater with small crystals and plates of quartz. Attractive and damage free. Nicely mounted in a perky box. $90

 

 

 

 

 

 

OKG-165

OKG-165    Quartz Stalactite   Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.   7 x 4.5 x 3.5 cm.  This fine stalactite is completely damage free and coated by Herkimer style quartz crystals on every surface other than its base, which it sits on perfectly for display.  There are tiny balls of red and silver colored hematite throughout.  The quartz is actually very clear and coating previous mineralization which can be seen through them in many places.  Great luster and displays fine from any side.  $250

 

 

 

 

OKG-457

OKG-457    Quartz cast after Anhydrite   Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.   5.4 x 4.5 x 2 cm.  An attractive, large pair of crystal casts which stand upright protruding from others.  Good views all around and I can only find one tiny missing crystal on the top of the piece.  Exceptional.  $230

 

 

 

 

OKJ-978

OKJ-978    Quartz and Calcite Stalactite   Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.   7.1 x 2.5 x 2.1 cm with quartz to 1 cm.  Another fantastic stalactite with a look of its own.  This one has lots of singe and double terminated quartz crystals and calcites on it surface well dispursed and lustrous.  No damage.  Also, like many of these specimens, better in hand.  $190

 

 

 

 

OKG-294

Bottom

OKG-294    Quartz, Calcite, Hematite   Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.   5.1 x 4.4 x 3.1 cm.  Lots of blades of dark colored hematite stud the clear quartz that coats this domical specimen.  It is part of a bubble which is also coated with quartz and hematite on its inside.  Edge damage only from removal from matrix.  $80

 

 

 

 

OKG-189

OKG-189    Prehnite on Quartz and Calcite   Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.   5.5 x 5.5 x 3 cm with quartz to 1.3 cm and calcite to 2 cm each.  A nicely balanced group of well formed crystals.  Backside chip on one quartz and one tiny prehnite ball is broken on base edge (easily seen in first image.  Selective face coatings by hematite on the calcites.  These minor issues have lead to a large price reduction to this fine miniature.   $140

 

 

 

 

OKG-371

OKG-371    Prehnite, Calcite, Stiphalomine, and Babingtonite   Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.  4.5 x 3.5 x 2.4 cm with prehnite balls  to 1.6 cm. The babingtonite crystal measures 1 cm long. Very complex mineralology and paragenesis here including anhydrite cast by all minerals, anyhdrite blade inclusions in the calcites and at least one unknown species as small blades.  Minor scuffing to a couple calcites but overall in nice condition.  $360

 

 

 

 

OKG-456

Hollow inside.

OKG-456    Quartz Stalactite   Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.   4.1 x 3.1 x 2. cm.  A completely damage free, hollow stalactite.  Needs some basic toothbrush and water cleaning.  Very nice.   $120

 

 

 

 

OKG-387

OKG-387    Calcite on Quartz casts after Anhydrite     Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.   47 x 3.2 x 2.6 cm with the large calcite measuring over 4 cm each. A super miniature at a fine price... cut in half due to a tiny rub on the calcite termination (even difficult to see in the blown up images.  The quartz are casts after anhydrite too!  A thing of beauty.   $100

 

 

 

 

OKG-124

OKG-124    Calcite    Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.   5.2 x 4 x 3 cm.  This is probably one of the finest calcites from the find!!  Gemmy throughout much of its body, included by hematite blades with many also on the surface.  It is very complex with numerous forms I am unfamiliar with.  No damage what so ever and a floater.  he luster is much better than the images indicate and as a whole the pictures can't do it justace.  It basically looks like an Indian calcite but way better!  And with all of that, it's also twinned!!  An expensive calcite...not really. $395

 

 

 

 

OKG-436

OKG-436    Quartz Stalactite   Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.   4.3 x 1.5 x 1.3 cm.  Cumberland habit quartz crystals make up the entire stalactite.  Zero damage.  A stunning miniature for this price.   $90

 

 

 

 

OKG-129

OKG-129    Calcite on Quartz     Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.   6.5 x 4.6 x 3 cm.  The calcites are up to 2 cm each.  Fine, clear to translucent in some areas.  Great luster.  English like material here with several crystals being twinned.  Minor hematite inclusions.  Damage free.  $140

 

 

 

OKG-065

Back side

Bottom

OKG-065     Calcite and Quartz  Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.   5.3 x 4 x 3.5 cm.  The calcites are to over 3 cm each.  An aesthetic miniature that views better than my photography shows.  No damage only a healed contact (all natural) on edge of the calcite.  The quartz is clearer than it appears here too.  Very fine example.   $180

 

 

 

 

 

 

 

OKK-123

OKK-123     Kyanite     Judd's Bridge, Roxbury, Connecticut.  Ex Dr. Steve Chamberlain collection.  7.8 x 6 x 4.5 cm rock with nice blades of kyanite throughout.  One small area is sawn flat so it sands on end.  $35

 

 

 

 

 

OKG-023

OKG-023     Calcite, and Prehnite with Hematite coatings    Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.   6.5 x 6 x 4.5 cm.  A very large calcite crystal with heavy and selective region hematite coatings.  For some reason the tip of this one is not heavily coated.  Minor prehnite balls around the base (visible in first and last images) of the piece but this is not a visible as one would like due to the coatings.  Damage free.  $175

 

 

 

 

OKJ-979

Back

Edge view

Edge view

OKJ-979    Quartz casts after Anhydrite    Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.   5.3 x 3.6 x 2.3 cm.  Nice, large parallel growth casts with only two very tiny crystals missing.  Desirable specimen for this find.  $300

 

 

 

OKG-420

Back

OKG-420    Calcite Twin on Quartz Stalactite   Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.  4.6 x 4.2 x 2.7 cm.  Calcites to 4.2 cm.   Exceedingly complex, twinned crystals with excellent clarity in most regions on a partial stalactite.  One cleave on one crystal but it still is very much worth listing and owning.  $160

 

 

 

 

 

OKG-013

Back

OKG-013    Prehnite on Quartz and Calcite with Hematite     Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.   7.4 x 6 x 4 cm.  A fine floater with a nice mix of minerals. The usual selective face coatings on the calcites, clear quartz and green balls of prenhite throughout.  All sides are nicely crystallized and attractive with the back and one edge being darker from hematite (which is sometimes in small blades).  A few small rubs/ chips but none are distracting so this would still qualify as being in nice condition.  $375

 

 

 

 

OKG-417

OKG-417    Babingtonite, Prehnite, Calcite     Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.   5 x 4.5 x 3.1 cm. An unusual specimen with white translucent calcites and light green prehnites.  The babingtonite crystals are small and certainly a rare mineral for this quarry and this specific find.  Displays nicest on edge as seen in the second image and is damage free.  $250

 

 

 

 

 

OKG-442

OKG-205     Calcite on Quartz coated Casts of ?         Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut. 10.5 x 8 x 3.4 cm with calcites to 1.8 cm.   A large plate of tiny quartz and larger double terminated calcites coating one side of this fine specimen.  The matrix is layered quartz on bubbles of ????  There were five or six of these specimen produced in total from this new find and this was the third best that I am aware of.  The piece is more three dimensional than the images show.  Very unusual and interesting piece.  $250

 

 

 

 

 

 

OKJ-967

OKJ-967    Quartz and Calcite     Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.  7 x 6.1 x 4.4 cm with quartz points to 2.8 cm each.  A beautiful, damage free, aesthetic example of nicely formed single and double terminated quartz crystals with fine calcites.  Great luster and clarity to the quartz and minor hematite for contrast.  A very respectable example for a reasonable price.   $125

 

 

 

 

 

 

 

OKJ-968

OKJ-968    Quartz and Calcite     Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.   1.7 x 7 x 3.5 cm overall with quartz points to 2.2 cm.  This fine example is damage free and typical of this interesting find.  The quartz is alpine quality and the hematite and calcites are nice contrasts.  $90

 

 

 

 

 

 

OKJ-969

OKJ-969    Quartz and Calcite   Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut. 9.6 x 5.5 x 4 cm with quartz crystals to 2 cm each.  Another fine, lustrous, damage free example.  Minor goethite replacing chalcopyrites as inclusions and in between quartz points.  Very flashy stuff.   $120

 

 

 

 

 

 

 

OKJ-970

Back

OKJ-970    Quartz cast after Anhydrite with Calcite     Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.   7.1 x 5.1 x approximately a cm thick. Another large, damage free example of these important pseudomorphs.  Complete crystal coverage, including nice double terminated calcites, on one side and a completely open view of the internal replacement surface on the other.  Again, problem free examples of this material are rare due to quarry blasting.   $165

 

 

 

 

OKJ-971

OKJ-971    Quartz and Calcite with Goethite pseudos after Chalcopyrite    Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.  9 x 5.5 x 3.3 cm overall with quartz crystals to 2.3 cm and calcites to 2 cm each.  An attractive plate of crystals with lots of luster, contrast in colors, contrast in form, and with nice damage free crystallization.   $160

 

Connecticut Minerals, Page 3

 

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