OKF-375
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OKF-375    Wulfenite (dipyramidal crystals with pinacoidal terminations)    San Juan Poniente, Ojuela Mine, Mapimi, Mexico.  It's funny to hear other dealers talking over the past year about these unique looking wulfenite crystals.  They make it sound like they've never been found before whereas this one likely dates back to the early 1970s.  No matter its age it is an exceptional display piece which also has a mix of what appears to be clear to white calcites and a good deal of yellow and brown micro- mimetites?  The wulfenites are both single and double terminated and up to 1.6 cm in length.  I can only find a couple with the aid of magnification which show damage.  One small area contact on backside.  To the eye this piece is exceptionally clean and viewable from all sides although the photos do it no justice.  The price is well below what specimens of this size from the new find are running.  This one sits beautifully for display and measures 7.5 x 5.5 x 4.4 cm.  Excellent luster, form and aesthetics to these crystals.  $300

OKF-188

OKF-188    Barite    Ojuela Mine, Mapimi, Durango, Mexico.  Ex. Nancy Collins collection.  This cluster measures 3.2 x 2.5 x 2.5 cm overall and is composed of gemmy, light gold, double terminated crystals to 1.8 cm each.  This specimen speaks for itself having the highest of luster and aesthetics.  $50

 

 

 

 

 

 

OKF-184

OKF-184      Datolite on Sphalerite    Charcas San Lois, Potasi, Mexico.  Ex. Nancy Collins collection.  This beauty is also an old-timer with translucent and transparent datolite crystals to over 2 cm each.  These crystals have a unique and complex form and a stand on edge well-off the matrix.  They are all damage free and attractive the entire piece measures 4.5 x 4 x 3.2 cm.  An interesting and showy specimen unlike those produced in more modern times.  $125

 

 

 

 

 

OKF-211

OKF-211    Legrandite    Ojda Mine, Mapimi, Drango, Mexico.  Ex Nancy Collins collection.  This is an outstanding crystallized specimen of this rare mineral.  The piece is a competitive great thumbnail with three legrandite crystals which measure 1.9, 2.0, and 1 cm respectively.  A very displayable piece which is much better in person.  The crystals are beautifully formed and one stands up on end well-off the matrix.  The crystals are typical brownish yellow, translucent and a high luster.  Very clean and damage free specimen which would be a great addition to any serious thumbnail collection.  $1000

 

 

 

 

 

OKF-153

OKF-153    Dolomite and Calcite    Guanajuato, Mexico.  Ex. Nancy Collins Collection.  This is an unusual piece in which each quite colored calcite is bisected by a zone of clear calcite.  The effect is unusual and easy to notice in the photographs.  The specimen measures 9.2 x 6 x 4.7 cm.  Moderate luster to the point sections of crystals and high luster possessed by the clear areas.  $160

 

 

 

 

 

OKF-146

OKF-146    Fluorite on Quartz    Naica, Mexico.  Ex. Nancy Collins Collection.  A single light green fluorite octahedron stands up nicely on the large bed of quartz.  This dome shaped specimen displays great from all sides.  The piece is damage free and very displayable.  $180

 

 

 

 

 

OKF-147	Back

OKF-147    Jamesonite with Pyrite and Quartz   RESERVED  El Sombrete, Durango, Mexico.  Ex. Nancy Collins Collection.  This bright specimen measures 6 x 2.7 x 3.3 cm and is composed of numerous needles of well formed Jamesonite crystals to 2.5 cm each.  Mixed within these needles are nice modified cubes of lustrous pyrite.  The majority of the crystals are crudely terminated.  A very fine specimen but locale.  450$

 

 

 

 

 

OKF-139	Side	Other side
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OKF-139    Wulfenite    Los Lamentos, Chihuahua, Mexico.  Ex. Jim Turek Collection.  This large 7 x 7 x 5 cm Crystal grouping is composed of several layers of well formed, high luster wulfenite crystals.  They are somewhat Birrell shaped, which is a typical for the location, and up to 1 cm in length.  Under magnification I can only find one small crystal missing on the front side.  One edge has some matrix contact, otherwise it is a floater.  Backside of grouping is more highly stained and has several dings or missing crystals.  The display face in this piece is wonderful and it sits well for display on several sides (edges).  A very desirable modern-day classic.  $400

 

 

 

 

 

OKF-131	Back

OKF-131    Vanadinite on Wulfenite    Ahumada Mine, Los Lamentos, Chihuahua, Mexico.  Ex. W.P. Hinley Collection, Circ. 1930s.  This specimen is a fine miniature composed of blocky wulfenite crystals to 1.4 cm on edge.  The entire specimen measures 5.4 x 5 x 3.3 cm.  The front sideshows better luster and less coating from the brown vanadinite.  This front side is perfect in all regards.  The backside is more heavily coated and has a few crystals are chipped.  The stack of crystals is very aesthetically composed having several hollow areas between crystals.  These blocky butterscotch colored vanadinite crystals show two different colors forming distinct layers in every crystal.  The color ranges from butterscotch in one layer to a reddish-brown any underlying layer.  This is a highly desirable and aesthetic display piece.  $500

 

 

 

 

 

OKF-121	Back	Close up

OKF-121    Chalcopyrite on Fluorite and Calcite    Guanajuato, Mexico.  Ex. Nancy Collins Collection.  This large hand like plate of tiny crystals is fully mineralized on bth sides and most of its edges.  It is damage free and shows dramatically different appearances on its two sides.  One is coated by gold chalcos on white calcite, giving it a darker appearance.  The other side has white calcites on white calcite and purple fluorite, giving that side a brighter effect.  The piece measures 13 x 10 cm and about 3 cm thick.  It is a substantial piece which has multiple layers, attractive coloring, good luster and displays great.  A deal at 150$

 

 

 

 

 

OKF-063

OKF-063     Adamite    Ouela, Mexico.    Ex. Dr. Steven Chamberlain collection.  This piece is a rather unusual form for the location.  The adamite is composed of microcrystals which take on a botryoidal form, almost stalactitic.  It has a nice apple green color over most of its surface with the backside having some staining giving those areas a brownish tint.  Specimen is glued into Perky box.  Damage free.  3.6 x 2.1 x 1.6 cm.  125$

 

 

 

 

 

OKF-052

OKF-052    Amethyst and Epidote    Las Vegas Mine, Veracruz, Mexico.  Ex. Art Edwards Collection.  This triangular shaped, 9.5 x 6 cm  piece of matrix is lightly coated by green epidote and small white quartz crystals.  The highlight is the pair of purple amethysts near the top of the specimen which rise off the surface in a “V” shaped pattern.  Crystals are to 2.3 cm.  Old specimen.  No damage.  420$

 

 

 

 

 

 

OKE-334

OKE-334    Datolite and Pyrite    Charcas, Mexico.  Ex. Nancy Collins Collection.  Nice translucent green datolites to 4 cm each with striated pyrite cubes perched high off their surfaces.  I find 2 cubes missing with magnification but otherwise damage free.  6.2 x 4.3 x 3.5 cm.  An excellent display specimen.  80$

 

 

 

 

 

OKE-415

OKE-415    Wulfenite with Duftite    Ojuela Mine, Mapimi, Durango, Mexico.  Ex. Nancy Collins Collection.  Green wulfenites to 2.8 cm each coated by balls of deeper green duftite.  The largest crystal has damage but the rest of the piece is in good shape.  Odd color!  3.3 x 3 x 2.8 cm.  45$

 

 

 

 

 

OKE-411

OKE-411    Azurite    Conception del Oro, Zacatecas, Mexico.  Ex. Nancy Collins Collection.  Deep blue, opaque crystals of azurite spray outward at slight angles from central point.  Big crystal damaged on back and a smaller one on the front.  3.3 cm long.  Even with the noteworthy damage this is a good example of this normally expensive material.  120$

 

 

 

 

 

 

OKE-408

OKE-408    Mimetite with Calcite    Mapimi, Mexico.  Ex. Jim Turek Collection.  This is a very fine cabinet specimen of mostly mimetite.  Calcites are white and dispersed over piece in thin crusts and the occasional larger crystal.  A heavy specimen which is basically all mounds of mimetite.  Nice luster, no damage and great aesthetics.  A fine display specimen.  11.5 x 6 x 5.5 cm.  200$

 

 

 

 

 

 

OKE-399

OKE-399    Wulfenite    Sierra de los Lamentos, Chihuahua, Mexico.  Ex. Nancy Collins Collection.  Beautiful orange crystal of wulfenite measuring 2.2 cm on edge with a 2.1 cm bisecting crystal.  Tiny bit of matrix visible mostly from back is likely mimetite.  Mottled appearance of coloring is unusual for the location.  Great tabular crystal in perfect condition.  A fine piece.  250$

 

 

 

 

 

OKE-397

OKE-397    Endichite coating Vanadinite    Sierre de los Lamentos, Chihuahua, Mexico.  Ex. Nancy Collins Collection.  Brown endichite thickly coating vanadinites to 1.5 cm each.  3 x 2.5 x 2.1 cm.  Minor calcite adds to the aesthetics of this already attractive combination piece.  Zero damage.  A fine displayable piece.  125$

 

 

 

 

OKE-383

OKE-383    Wulfenite    Los Lomentos Mine, Chihuahua, Mexico.  Ex. Nancy Collins Collection.  Big orange translucent crystals in an atypical for.  These barrel shaped crystals are in parallel growth and on minor matrix.  No damage but some mounting adhesive is present on base of piece.  3 x 2.6 x 1.7 cm overall.  200

 

 

 

 

OKE-384

OKE-384    Vanadinite and Calcite   San Carlos, Chihuahua, Mexico.  Ex. Nancy Collins Collection.   This is an exceptionally large single crystal, 3.5 x 2.4 x 2 cm, which is highly hoppered in form.  The crystal is translucent and ranges from mostly green in its body to orange at its termination.  Only one tiny basal contact.  Partial old collection #.  The calcites are clear/ white and scattered about in a very aesthetic manner.  This is certainly a very displayable and desirable specimen.  240$

 

 

 

OKD-754

OKD-754     Ludlamite and Marcasite      San Eulalia, Mexico.  Ex. Jim Turek Collection.  A fine, complete, damage free 2 cm ball of radiating crystals of ludlamite on druze quartz coating marcasite.  This is a very fine example of this uncommon species.  Stands up well for display and views well from numerous directions.  Entire specimen measures 3.5 cm.  Excellent specimen.  200$

 

 

 

 

 

OKD-840

OKD-840    Calcite    Chico Mine, Guanatajuato, Mexico.  Ex. Dr. Steve Chamberlain Collection.  Prev. Carmegie Museum specimen, Prev. W. W. Jeffris collection.  Five old tags documenting the history on this one…a big dome of calcite blades to 1.5 cm each.  Only a couple cleaved crystals which are only noticeable with magnification.  8 x 7 x 5 cm.  A fine historic piece.  150$

 

 

 

 

OKD-838	Back

OKD-838    Celestine    Durango, Mexico.  Ex. Dr. Steve Chamberlain Collection.  7.5 x 3 7 x .8 cm gemmy clear, tabular celestine crystal.  Beautifully formed with nice deep serrations.  A fine displayable specimen with zero damage.  70$

 

 

 

OKD-827	Back

OKD-827    Chalcopyrite      RESERVED    Zacatecas, Mexico.  Ex. Dr. Steve Chamberlain Collection.  An older specimen from the George and Marion Springs collection.  It is composed of exceptionally large chalcopyrite crystals on matrix.  The largest crystal measures over 3 cm and is very complex in form.  The crystals have nice striations and a semi metallic patina.  A fine specimen which measures 6 x 4.5 x 3 cm.  Tough to find chalchopyrites from anywhere of this quality.  160$

 

 

 

 

OKD-754

OKD-754     Ludlamite and Marcasite     San Eulalia, Mexico.  Ex. Jim Turek Collection.  A fine, complete, damage free 2 cm ball of radiating crystals of ludlamite on druze quartz coating marcasite.  This is a very fine example of this uncommon species.  Stands up well for display and views well from numerous directions.  Excellent specimen.  200$

 

 

 

 

OKD-246

OKD-246    Sphalerite Twins, Galena (Spinel Law Twin), Pyrite and Fluorite    Naica, Chihuahua, Mexico.  Ex. Dr. Steve Chamberlain Collection.  A fine, damage free combination piece with nice luster and excellent form to all the crystals.  The fluorite and the galena twin measure .8 cm on edge each while the sphalerite crystals are larger (to 1.8 cm each).   The specimen measures 4.8 x 4.2 x 3 cm.  This is an aesthetic specimen which came out of the ground in the mid 1970’s.  60$

 

 

 

 

OKD-595

OKD-595       Aragonite   Cave of Bells, Mexico.  Ex. Dr. Steve Chamberlain Collection.     A showy white grouping of crystal encrusted aragonite stalactites to 3 cm each.  Clean surfaces, good white color.  The matrix is fully covered by well-formed stalactites that exhibit no damage and are exceedingly attractive.  The specimen is 10 cm long and displays as well as any I have seen from this location.   75$

 

 

OKD-523		Close up of a bow tie.

OKD-523     Adamite    Ojuala Mine, Mapimi, Durango, Mexico.  Ex. Nancy Collins Collection.  This is a very fine and displayable adamite.  Beautiful high luster, yellow bowties of adamite are delicately perched high on a dark brown matrix.  Minor glue and Styrofoam on base of piece could, and should, be removed.  4 x 3.5 x 2 cm.  One spot of damage which does not show from front or back view.  Aesthetic.  145$

 

 

 

 

OKD-521		Close up

OKD- 521     Cuprian Adamite    Ojuala Mine, Mapimi, Durango, Mexico.  A fine green stalactite of cuprian adamite serves as the centerpiece of this specimen.  It is a colorful 1.8 cm stack of crystals in the small vug formed from this brown matrix.  Other crystals are sprinkled throughout but the stalactite the noteworthy mineralization.  195$

 

 

 

 

OKD-517