June 2017 Update

 

 

 

OKP-189      Quartz, Calcite, Pyrite    Lyndhurst, Ontario, Canada.  Ex. John Davis collection.  This unusual example is the finest small specimen of Lyndhurst quartz I have handled.  It measures 8 x 3 x 2.7 cm overall and is composed of a tightly grouped cluster of calcite crystals on two Arkansas habit quartz crystals.  One is a tiny, doubly terminated crystal that is partially buried amongst the calcites and the other is the longer, singly terminated crystal that makes up the body of the piece.  Both are exceptionally clear for this locality and are look-alikes for quartz from Arkansas or Brazil.  The calcite crystals are modified rhombs that show the selective face phantoms so desired from this locale.  Pyrite in tiny crystals is embedded in the calcites.  The large quartz crystal has a thin chip on the termination otherwise the specimen is very clean and free of damage.  Anyone who is familiar with this material knows well how uncommon a piece like this is.  $550

 

 

 

 

 

 

OKP-183

Bottom

OKP-183     Tourmaline     Classic Hill Top Locale, Powers Farm, Pierrepont, St. Lawrence County, New York.  Collected by Jay and Michael Walter.  This example is a 2.6 x 2.5 x 2.2 cm competitive grade thumbnail specimen.  It has the highest luster one can find in these specimens and a wonderful hemimorphic form.  There is one extremely small rub but it is really nit picking this one to say that.  They really don’t get better than this.  It is very rare for me to offer one of this high a quality.  The specimen is naturally etched, not a product of an acid bath, so it is very stable.  The base has a very small area of matrix contact.  This is among the finest I have seen or offered in this size range. $450

 

 

 

 

 

 

OKP-187

Back

OKP-187     Tourmaline     Classic Hill Top Locale, Powers Farm, Pierrepont, St. Lawrence County, New York.  Collected by Michael Walter.  This example is a 2.7 x 2.4 x 2.4 cm high quality, thumbnail specimen.  Some areas are minor contacts or poorly formed, as seen.  It is an exceptional example for the location.  Fantastic luster!  The specimen is naturally etched, not a product of an acid bath, so it is very stable.  A nice piece for the price.  $150

 

 

 

 

 

 

OKP-188

Bottom

OKP-188     Tourmaline     Classic Hill Top Locale, Powers Farm, Pierrepont, St. Lawrence County, New York.  Ex. John Davis collection.  This example is a 3 x 2.9 x 1.7 cm cluster.  It is complete all around but the luster varies from typical to very nice. Some contacts from other crystals as seen.  It is a fine example for the location.  The specimen is naturally etched, not a product of an acid bath, so it is very stable.  As can be seen this specimen would benefit from further cleaning.  A nice piece for the price.  $60

 

 

 

 

 

 

OKP-191       Quartz, Calcite, Pyrite    Lyndhurst, Ontario, Canada.  Ex. John Davis collection.  This unusual example is an exceptional specimen of Lyndhurst quartz.  It measures               19 x 11 x 9 cm overall and is composed of several large quartz crystals with interlocked brecciated quartz and calcite crystals.  The quartz crystals are both singly and doubly terminated.  A couple of the quartz crystals have very tiny dings but the piece is unusually clean and damage free, otherwise.  The calcites show the expected phantoms and much of the piece has a dusting of pyrite.  The specimen was the only one out on display at John’s house.  It sat on his coffee table in front of his couch.  He was very proud of this specimen making it readily available for inspection to visitors.  Anyone who is familiar with this material will recognize this as an exceptional piece for the site.  $400

 

 

 

 

 

 

OKO-764

OKO-764      Garnet     Stanley Butte, Graham County, Arizona.  Ex. Harold L. Dibble.  4.8 x 2.6 x 1.5 cm domical plate of bright olive green crystals.  No damage.  Perfection.  $40

 

 

 

 

 

OKO-765

OKO-765       Geode    Brazil.  Ex. Harold L. Dibble.  6.5 x 5.2 x 3.1 cm geode of quartz.  Well cut, polished and presented.  No damage.  $25

 

 

 

 

 

OKO-766

OKO-766      Danburite     Mina Aurora, Characas, Sal Luis Potasi, Mexico.  Ex. Harold L. Dibble.  3.5 x 3.5 x 1.4 cm gemmy example.  White at base is some hot glue. No damage.  Great example of unusually nice clarity.  $80

 

 

 

 

 

 

OKO-767

Back side with sphalerite

OKO-767    Sphalerite on Galena.     Kenora Mine, Cardin, Oklahoma.  Ex. Harold L. Dibble.  What a thing of beauty... classic patina, floater with only the smallest of chips on an underside of one corner, fantastic corner and surface overgrowths... the sphalerites are totally gem and a beautiful red.  Most of the sphalerites are on what I'd call the base.  Great views from any direction.  3.5 x 2.6 x 3.6 cm.  The form on this specimen is outrageous!  $290

 

 

 

 

 

OKO-768

OKO-768       Orthoclase      Dona Ana County, New Mexico.  Ex. Harold L. Dibble.  A nicely twinned single crystal that measures 3.7 x 3.3 x 3.2 cm on edges.  Good damage free views all around.  Base contact.  $25

 

 

 

 

 

OKO-769

OKO-769       Heulandite       India.  Ex. Harold L. Dibble.  A nice small cabinet piece that measures 5.5 x 5 x 2.7 cm piece composed of transparent crystal, mostly double terminated and up to 2.7 cm each.  Great luster, no damage.  $35

 

 

 

 

 

OKO-781

Back

Sphalerite

OKO-781        Galena, Fluorite, Sphalerite       Cave-In-Rock, Illinois.  Ex. Harold L. Dibble.  One side is classic, patina rich galenas nd one dark sphalerite.  The other is small purple cubes of fluorite.  I'd call this a floater in that the small edge area that may once have been attached to wall rock has naturally healed.  Minor scuffing on a couple of the tiny fluorites probably because this heavy specimen has always been displayed with that side down.  7.4 x 5.2 x 4.1 cm.  The big galena is 3 cm on edge.  Nearly damage free.  Great surface texture and features.  This is a rather uncommonly rich galena for the Cave-In-Rock district.  $300

 

 

 

 

 

OKO-782

OKO-782       Pectolite       Prospect Park, Passaic County, New Jersey.  Ex. Harold L. Dibble.  Previous John Sinkankas collection.  6.6 x 5.1 x 3.1 cm.  Good views all around.  No damage.  Classic piece from a classic mineralogist (John).  $250

 

 

 

 

 

OKO-783

Back

OKO-783       Fluorite and Celestine      Lime City, Ohio.  Ex. Harold L. Dibble.  A 5.2 x 5 x 3.1 cm piece that is a floater.  Back is coated by fluorites of lightet color, almost clear while the front shows the bigger crystals in they typical yellow/ amber color.  The celestines are incomplete and healed or broken off.  The main cubes show a couple tiny corner cleaves on edge of piece but all this considered the specimen is is excellent shape and views nicely as can be seen in the images.  Luster, form, clarity, and arrangement of crystals makes this a fine example of this material.  $200

 

 

 

 

 

OKO-784

OKO-784      Gypsum     Cartersville, Georgia.  Ex. Harold L. Dibble.  When they are in god condition, as this one is, these specimens are interesting as well as aesthetic.  The saw blade form to these tabular crystals is quite unusual in selenite gypsums and these are classics.  4 x 3.6 x 2.5 cm.  The dark, phantom cores being overgrown by the transparent/ translucent light yellow colored crystals created a fine contrast to each crystal so they are easily differentiated in clusters such as this.  Only damage is a couple broken crystals near edge on one side (back?).  Minor Styrofoam on base.  A fine example.  $280

 

 

 

 

 

OKO-790

OKO-790       Pyrite       Autoroute 10/55 Interchange Road Cuts, Sherbrooke TE, Estrie, Quebec, Canada. Ex. Dr. Steve Chamberlain Collection, circ. 1986.  This material was field collected during road construction in the mid 1980’s and stored as “bulk rock”.  After two weeks (several long days) of trimming and preparation work they are ready to sell as attractive mineral specimens.  The white seen along the contact between the cube and the rock, phyllite, is fibrous quartz.  This is a rim (not glue, or crystal alteration, or anything else) and is discussed in a February 2013 letter to Rocks and Minerals Magazine by Dr. Peter Richards.  He notes:

“In 1986, Steve Chamberlain and I collected a large number of pyrite cubes embedded in phyllite from a road construction site near Sherbrooke, Quebec. These pyrite crystals also have rims of quartz, white and fibrous. The rims are thick in some areas and thin or absent in others. All rims are found in the same position in a given specimen, regardless of the orientation of the pyrite crystals. That is to say, the location of the rims seems to be a feature of the rock and not of the pyrite crystals.  After some research, I learned that these rims are known to metamorphic petrologists as pressure shadows and that they are often seen in various metamorphic rocks associated with impervious objects that are larger than the grain of the rock.”

This piece has been photographed under low light so the details of itshighly striated surfaces can be better viewed.  It is bright having a luster in check with the finest pyrite specimens from other parts of the world.  It measures 7 x 6.1 x 4.2 cm and has the sngle cube seen that measures 2 cm on edge.  It is damage free (which in itself is very uncommon) and ranks as one of the finest of these that I have ever seen.  If it were from Spain, no big deal, but from this location it is an important piece!  $275

 

 

 

 

 

OKM-156

OKM-156       Quartz (variety Amethyst)      Branderberg Area, Erongo Region, Namibia.  Ex. Harold L. Dibble.  A attractive 5 x 3 x 2.8 cm crystal with rich purple color dominating and some faces being white.  The skeletal form is present to some degree on every face with the exception on one of the smaller terminal faces.  Great damage free example of this material.  $75

 

 

 

 

 

OKM-169

OKM-169      Uvite on Quartz     Bramado Babia, Brazil.  Ex. Harold L. Dibble.  4.8 x 3 x 1.6 cm specimen with a 2 cm green, transparent to translucent uvite embedded in the side of a clear quartz crystal.  No damage but the back shows regrowth to the uvite so it appears incomplete in side or back view.  Front and other side view beautifully.  The quartz show secondary growth on a couple of faces and some tiny quartz attachments.  A very aesthetic miniature that is mounted on an acrylic base.  Very good example of this older Brazilian material.  $275

 

 

 

 

 

OKM-168

OKM-168      Brazilianite      Conselhiero Pena, Minas Gerais, Brazil.  Ex. Harold L. Dibble.  This wedged shaped crystal measures 3.5 x 2.6 x 1.2 cm and is gemmy with moderate internal cracks and veils.  Base contact and partially healed back contact.  No damage to main viewable surfaces.  Nice rich yellow color.  $150

 

 

 

 

 

OKM-157

OKM-157      Grossular     Val Strem Mine, Salzburg, Austria.  Ex. Harold L. Dibble.  This specimen measures 6.6 x 4.3 x 2.9 cm and sits on edge nicely for display.  A can be seen the crystals are gemmy with lots of internal imperfections and smooth lustrous surfaces.  There are contacts on the top where it would have grown into the other wall of the small vug.  The crystals showing have been etched out of calcite and further work on that front would expose more.  An attractive European specimen.  $190

 

 

 

 

 

OKM-110

OKM-110       Quartz (Japan Law Twin)     El Capitan Mountains, Licoln County, New Mexico.  Ex. Harold L. Dibble.  Very clear, lustrous example that measures 4.3 x 4 x 1.4 cm.  Minor blue mineral tac, damage on both flanges of the twin as seen.  $90

 

 

 

 

 

OKM-167

OKM-167     Hedenbergite       Primore, Dal negorsk, Russia.  Ex. Harold L. Dibble.  An unusual mineral species for this prolific localoty.  It measures 6.6 x 3.5 x 3.2 cm.  There are also small twinned, metallic crystals of what resembles sphalerite.  Zero damage.  $175

 

 

 

 

 

OKM-162

OKM-162      Witherite and Fluorite      Cave-In-Rock, Illinois.  Ex. Harold L. Dibble.  A domical piece composed of several large intergrown crystals.  They have penetrated by a thin stringer of purple and blue fluorite.  Edge contacts but body of specimen is in nice condition.  8.5 x 7.2 x 3.2 cm.  Flat back (or base).  Nice example and I assume very fluorescent.  $240

 

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