Connecticut Mineral Specimens For Sale, Page 3

   

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.

 

 

 

 

OKJ972

OKK-754    Quartz and Calcite     Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.  5.1 x 4.8 x 3 cm overall with quartz points to 2 cm.   This is among the finest, damage free, aesthetic miniatures of this material I've noticed from the find.  The burst of quartz crystals is girdled by calcites, the matrix, in perfect proportion.  Crystallized by quartz druse on backside.  A very fine example in every regard.  $175

 

 

 

 

 

 

 

OKJ-973

OKJ-973    Quartz cast after Apophyllite with Calcite    Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.  8 x 5.2 x 3.5.  The largest pseudomorph measures 3 cm wide.  Another unique specimen of which I have seen no other examples!  Not as highly aesthetic as most of the material from this material so it has a very attractive price for a unique mineral specimen.  A little calcite on bottom edge is gone but otherwise damage free.  An important specimen to someone... keep in mind this find appears to be exhausted.  $120

 

 

 

 

 

 

 

OKJ-974

Back

OKJ-974    Quartz cast after Anhydrite with Calcite     Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.  6 x 3.4 x 1.2 cm.  The largest calcite measures 2 cm long. A nice example of these casts with only a small tip chip, otherwise complete and damage free.  Beautifully formed, double terminated calcite with good luster and translucence.   $95

 

 

 

 

 

 

 

OKJ-975

OKJ-975    Quartz and Calcite     Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.  72 x 5.5 x 2 cm with quartz crystals to 2.1 cm.  A fine, damage free example of this aesthetic material.  No issues except positive ones.  Like most of these specimens this is also better in hand.  $95

 

 

 

 

 

 

 

OKJ-976

OKK-754    Quartz and Calcite with Chalcopyrite     Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.  6.2 x 4.5 x 2. cm with quartz crystals to 1.5 cm.  A cute, specimen with the typical look.  A rather large chalcopyrite replaced by goethite.  It is chipped on the backside... no other damage.   $45

 

 

 

 

 

 

OKG-123

OKG-123    Calcite and Quartz Stalactite     Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.  9.5 x 3.5 x 3.5 cm.  Largest calcites are to 2.5 cm.  A fine large, low luster stalactite.  A few cleaved crystals but overall not in bad condition.  Big calcites have a yellowish green tint and moderate luster.  Interesting and priced to go.  Temporarily mounted on an acrylic  plate with hot glue.  $195

 

 

 

 

OKJ-966

OKJ-966    Quartz cast after Anhydrite     Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.  6.5 x 4.3 x 2.5 cm.  Several plates or layers of flat anhydrite crystals have had overgrowths of quartz forming an interesting array.  Larger calcites are present but obscured from ideal view between crystal casts.  Large!  Minor breakage on top of one crystal cast and some chips on back.  Overall good quality but not spotless (nor expensive for one of these as a result).  $150

 

 

 

 

 

OKG-639

Back

OKG-639    Quartz and Prehnite on Calcite     Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.  4.6 x 3.4 x 2 cm with quartz to 1.5 cm.  Although small this fine example has quality examples of the species desired from this find.  A couple very tiny calcites show small cleaves but these are not noticeable without magnification and the piece displays as damage free.   Excellent miniature which is far better in hand showing a nicer, bright luster.  $60

 

 

 

 

 

 

 

 

 

 

OKG-144

Best lighting showing actual color and tone.

Back

Base

OKG-144    Quartz cast after Anhydrite     Roncari Quarry, (Tilcon Quarry), East Granby, Hartford, Connecticut.  Collected by Jerry Marchand.  Mounted on a custom engraved acrylic base.  Numerous, divergent anhydrite casts compose this 5.5 x 4 x 2.5 cm specimen.  Small crystal missing on top and chip to one cast on back.  Displays great from front, sides and frankly just fine from the back.  Very good condition for this material.  Specimens of this material will be what the locale should be noted for years from now.   $395

 

 

 

 

 

 

OKK-185

OKK-185    Prehnite      Woodbury Sup. Co., Woodbury, Connecticut.  Ex. Paul and Dawne Dunnning collection.  White translucent rhombs on green prehnite.  4 x 3 x 1.6 cm.  No damage and mounted in a perky box.  

 

 

 

 

 

 

RAI-005

Bottom

 

RAI-005     Quartz on Calcite     Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.  An aesthetic small cabinet specimen measuring 7.7 x 7.5 x 4 cm.  The piece is a perfect dome of calcite which is coated on one edge/ side by fabulous, glassy quartz crystals to 2.4 cm each.  One spot may be damage to a small crystal but I canít really tell even with 10x, so I will describe this as a damage free piece (I think it is internal cracking within a crystal which I am noticing).  Iím being way over critical but so few specimens from this active quarry are damage free that I just donít expect to see such clean specimen like this one.  350$

 

 

 

 

 

OKK-982

OKK-982    Quartz     Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut.  Ex. Dr. Steve Chamberlain collection, prev. George and Marion Springs.  Fully gem smoky quartz crystal measuring 2.4 x .8 x .7 cm.  What makes this piece very interesting are the extra terminal faces.  I assume it is twinned but under which law I am unaware.  No damage, very attractive.  $75

 

 

 

 

 

OKJ-879

OKJ-879     Prehnite     East Granby, Connecticut.  Ex Paul and Dawn Dunning Collection.  Attractive light green, old timer for this quarry, with minor white calcite.  No damage and mounted in a perky box.  Great form.  3.4 x 2.5 x 1 cm.  Nice.  $35

 

 

 

 

 

 

OKJ-634

OKJ-634    Heulandite on Quartz cast after ?     Hartford, Connecticut.  Likely a cast after laumontite.  Ex. Paul and Dawne Dunning collection.  An attractive, single, blocky cast of quartz after anhydrite with a well formed heulandite attached to one side of it's termination.  3.5 x 1.9 x 1.2 cm.  A fine TN specimen for the east coast collector.  Mounted in a perky box.  No damage.  $80

 

 

 

 

 

OKJ-570

OKJ-570    Chalcocite    Bristol Copper Mine, Bristol, Hartford Co., Connecticut.  Ex. Dr. Steve Chamberlain Collection, prev. Univ. of Rochester College collection.  This is certainly a classic east coast locality with no rivals for this rare species except those from Wisconsin.  Specimens from this locale are one of the true cornerstones of any respectable east coast site.  This piece has a fantastic classic look due to its even, steel gray patina.  A large TN specimen measuring 2.9 x 2.4 x 1.5 cm.  Sharply crystallized in all areas. Excellent provenance.  There are several spots showing damage so the price is deeply discounted.  In pristine condition this piece would be well out of the reach of most collectors.  These things have become as rare as ďhens teethĒ and are mineralogically important (ref. Rocks and Minerals, 11: 37 and the Mineralogical Record, 32, 433).  An exceptionally fine, rare and desirable specimen for the discriminating thumbnail collector.  625$

 

 

 

 

 

 

OKJ-327

OKJ-327    Beryl    Strickland Quarry, Portland, Middlesex Co., Connecticut.  Ex. Dr. Steve Chamberlain collection.  Prev. Marcelle Weber collection, prev. old collection provenance unknown.  A fine translucent, double terminated beryl of a light greenish white color.  2.4 x 1.6 x 1.1 cm overall.  Good luster, very nice form and no damage.  Pinnicoid termination on one end and more complex forms on other.  An important find for someone who focuses on N.E. classics.  $165

 

 

 

 

 

OKJ-376

Back

OKJ-376    Goethite    Salisbury, Litchfield County, Connecticut.  Ex. Dr. Steve Chamberlain collection.   This is an attractive, old-time specimen that looks more like it should be from England or perhaps Michigan.  This wonderful East Coast specimen measures 5.1 x 3.6 x 2.5 cm overall.  Base and back contacts.  Wonderful fingerlike form and nice luster.  No damage.  Attractive and interesting classic.  $220

 

 

 

 

The following specimens from Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut are the ones discussed in Joe Polityka's recent Springfield Show review in The Mineralogical Record, Nov.- Dec. 2010, p. 547.  I hope you enjoy them as much as I have enjoyed photographing and describing them.

 

OKH-362

OKH-362    Quartz Stalactite     Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.  This well formed stalactite measures 6 x 5 x 3.8 cm.  The quartz are lustrous and clean.  It stands on end nicely for display and offers good views from any side.  Backside has a scrapped area at its base otherwise damage free.  Attractive and unusually nice for the locale.  50$

 

 

 

 

 

OKH-363

Base

OKH-363    Quartz and Calcite     Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.  An aesthetic cabinet specimen measuring 9.5 x 6.7 x 4.2 cm.  Double dome of single terminated quartz crystals to over 2 cm each on calcite.  The quartz is gemmy and have minor hematite inclusions/ staining.  Several quartz are missing and one calcite is cleaved.  Specimen has crystallization on base as well.  Views nicely from any direction.  All in all, a good specimen which displays well but has been priced low due to the damage.  90$

 

 

 

 

 

OKH-364

Base with anhydrite casts

OKH-364    Quartz, Calcite and Stipnomeline on Quartz casts after Anhydrite     Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.  An aesthetic small cabinet specimen measuring 8 x 5.4 x 3 cm.  Lots going on in the paragenesis of this specimen.  Casts are visible from base while the top view shows calcites to 2 cm each with quartz crystals.  Stipnomeline fills in between some of the primary crystals.  Breakage to one big calcite on edge from specimen extraction (as would be expected), otherwise clean.  85$

 

 

 

 

 

OKH-365

Back

OKH-365    Calcite on Quartz casts after Anhydrite     Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.  An aesthetic miniature measuring 4.2 x 3 x 1.9 cm.  There are two nicely formed, double terminated calcites on the surface of the cast, to 1.9 cm each.  Backside of piece is totally open and better shows the extent of the mineral replacement that will make this type of cast from Roncari a modern day classic.  These seem to be the most desired specimens from this new find.  This one is an excellent example.  80$

 

 

 

 

 

OKH-366

OKH-366    Quartz      Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut.  An aesthetic small cabinet specimen measuring 8.2 x 5 x 4.2 cm with crystals to 2.5 cm each.  Great views from three sides on this dome shaped specimen.  Minor chalcopyrites and hematite in tiny balls add a nice contrast.  Some base crystallization.  Minor blasting damage: one missing point and a few very tiny tip dings.  Nothing to draw your attention other than the great aesthetics of this exceptional piece.  225$

 

 

 

 

 

OKL-189

OKG-208     Calcite (Twinned on 0112)      Roncari Quarry Tilcon Quarry), East Granby, Hartford, Connecticut. An especially rare form of twin for the location, or anywhere. Great clarity with only minor inclusions, minor pyrite crystal inclusions and base shows one crystal contact and lots of small casts in the calcite from forming on anhydrite. Very interesting. VERY minor termination bruising I could not notice until I used a loupe on it. 2.9 x 1.8 x 1.3 cm. $195

 

 

 

 

 

 

 

OKG-133

OKG-133    Calcite and Quartz Stalactite      Roncari Quarry Tilcon Quarry), East Granby, Hartford, Connecticut. 8.1 x 2 x 2 cm with double terminated calcite crystals to 2 cm each. Lots of interesting color variation due to hematite inclusions and staining. Several very tiny touch marks (donít forget they blast here) that do not distract from the overall appearance. A really attractive, displayable stalactite for this price. $250

 

 

 

 

 

 

OKG-064

OKG-064    Hematite on Calcite      Roncari Quarry Tilcon Quarry), East Granby, Hartford, Connecticut. A very translucent single crystal of interesting and somewhat unique form. I donít remember any other crystals from here being quite so elongated. Lots of sharp hematite balls on every side with very few nearest the termination. Several steps to this complex termination (not cleaved). Only damage is a tiny attached crystal near the base being cleaved. Really displays as undamaged. Great luster. 9.6 x 3.5 x 3.2 cm. $295

 

 

 

 

 

 

 

OKL-170

OKL-170    Quartz and Calcite with quartz casts after Anhydrite      Roncari Quarry Tilcon Quarry), East Granby, Hartford, Connecticut. Single and double terminated crystals form this dome of almost all quartz with minor hematite. Minor calcite is what forms the first layer of crystals on the matrix. One large 4 plus cm quartz cast after anhydrite is embedded amongst the quartz and not immediately obvious. No damage. Matrix is crystallized and cast after two bubbles. High luster. Top quality. 7.5 x 6.7 x 4.2 with quartz points to 2 cm. $350

 

CONNECTICUT MINERALS, PAGE 4

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