July 2017 Update

 

 

OKO-508

OKO-508     Quartz    Minas Gerais, Brazil.  Ex Harold L. Dibble collection.  A 7.5 x 4.5 x 4.1 cm piece with prismatic and tabular/prismatic crystals.  Minor chipping in a couple spots, but not distracting.  Sits well on a healed base.  Nice high luster, clear crystals.  $30

 

 

 

 

 

OKO-509

OKO-509     Groutite in Petrified Wood      Navajo Indian Reservation, Holbrook, Navajo County, Arizona.  Ex. Paul and Dawne Dunning collection.  A fine example of rare groutite crystals in their acicular form.  As can be seen, the groupings are sharp, lustrous and in fine condition.  7.7 x 6.8 x 3.2 cm overall with the groutite encased region being approximately 2.5 x 2 cm square.  A great example of material rare in today’s market.  $350

 

 

 

 

 

OKO-510

OKO-510      Prehnite casts after Laumontite    Jalgoan, India.  A large plate of casts to 2.2 cm each coat the upper surface which is 11.5 x 9 cm.  Only a couple small chipped spots that are challenging to find.  An excellent example of this well known material.  $45

 

 

 

 

 

OKO-511

OKO-511      Fluorite, Pyrite and Unknown      El Hamman, Morocco.  Ex. Paul and Dawne Dunning collection.  This is an exceptional miniature to small-cabinet sized piece for Morocco.  Tiny balls of pyrite encrust limited areas of the specimen's upper surface along with tiny white/clear crystals of an unknown mineral (almost looks like stilbite blades).  The piece is complete on all surfaces except on edge that shows minor contact as well as one cube on the base.  Views well from any direction.  Domical in shape.  It measures 5.4 x 5.4 x 3.4 cm overall.  The cubes show lots of surface growth features that partially mask the fact that the crystals themselves are transparent.  The several small white areas are a second (white colored) generation of fluorite.  Top quality fluorite.  $275

 

 

 

 

 

OKO-512

Bottom

OKO-512    Stilbite    Poona, India.  6.5 x 3.9 x 2.8 cm bowtie cluster of translucent crystals.  The luster is great, it is damage free, only a tiny base contact from matrix… displays great.  $30

 

 

 

 

 

OKO-513

OKO-513    Quartz     Minas Gerais, Brazil.  Ex. Harold L. Dibble collection.  A nice single crystal with stepped (“Alligator”) surfaces.  Good luster, no damage, base contact.  $45

 

 

 

 

 

OKO-514

OKO-514     Rhodochrosite    Catamarca Province, Argentina.  Ex. Paul and Dawne Dunning collection.  A 9 x 6 x 4.5 cm piece with a curved polished surface.  The specimen shows a mix of pinks and deeper reds along with minor seams of green.  In good condition.  $80

 

 

 

 

 

OKO-515

OKO-515     Quartz    Ouray, Colorado.  Ex. Paul and Dawne Dunning collection.  A fine example of this well recognized material from Colorado.  It measures 9.1 x 5.6 x 5.6 cm.  It is composed of small secondary growth crystals on a large, single, primary growth quartz crystal.  It has a sugary texture and bright white color.  The luster is very nice and there are some tiny crystals broken off as is always the case with any of these I have ever seen.  Overall, it is in nice condition and very display worthy.  It sits nicely on end for display.  $50

 

 

 

 

 

OKO-516

OKO-516     Barite     Characas, San Luis Potosi, Mexico.  Ex. Harold L. Dibble collection.  A plate of white barite crystals that jut out in all directions.  The piece measures 8.4 x 8.1 x 6.4 cm with crystals to 2.5 cm each.  Many have steep terminations that would almost allow them to pass as quartz crystals.  One crystal broke off near edge of piece as seen.  $60

 

 

 

 

 

OKO-517

OKO-517    Spessartine    Tongbei, Yunxiao County, Fujian Province, China.  Old material (the contemporary material from this mine is orange).  This domical piece measures 4.3 x 2.6 x 2.2 cm.  The crystals are well formed and up to 1.1 cm each.  Nice translucence/transparency.  No damage.  $50

 

 

 

 

 

OKO-518

OKO-518    Spessartine and Quartz     Tongbei, Yunxiao County, Fujian Province, China.  Old material (the contemporary material from this mine is orange).  The piece seen here is typical with fine red crystals coating a 4 x 3.5 x 2.2 cm matrix.  Three-dimensional qualities are good and it views nicely from all directions.  One quartz has a healed surface.  Nice translucence/transparency.  No damage.  $40

 

 

 

 

 

OKO-519

OKO-519     Stilbite    Nova Scotia, Canada.  Ex. Paul and Dawne Dunning collection.  A fine, large natroilite vug almost entirely filled with damage free, brown stilbite crystals.  For this material the piece is of excellent quality as can be seen.  $65

 

 

 

 

 

OKN-882

OKN-882    Fluorapatite    Richardson Fusion Mine, near Wilberforce, Ontario, Canada.  Collected by Michael Walter, 1990s.  A nice example of this uncommon material that measures in at 4.7 x 1.7 x 1.2 cm.  These were always very difficult to find in complete crystals.  The color is very unique being a brownish red, more like the color of a good Ontario zircon.  Doubly terminated and nicely formed.  Nice luster, no damage.  $40

 

 

 

 

 

OKN-883

OKN-883    Fluorapatite    Richardson Fusion Mine, near Wilberforce, Ontario, Canada.  Collected by Michael Walter, 1990s.  A nice example of this uncommon material that measures in at 6.2 x 2.6 x 1.6 cm.  These were always very difficult to find in complete crystals.  The color is very unique being a brownish red, more like the color of a good Ontario zircon.  Singly terminated with some pitting as seen.  Moderate luster, no damage.  $30

 

 

 

 

 

OKN-884

OKN-884    Fluorapatite    Richardson Fusion Mine, near Wilberforce, Ontario, Canada.  Collected by Michael Walter, 1990s.  A nice example of this uncommon material that measures in at 4.5 x 2 x 1.6 cm.  These were always very difficult to find in complete crystals.  The color is very unique being a brownish red, more like the color of a good Ontario zircon.  Doubly terminated, but poorly formed.  Exceptional luster, no damage.  $40

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