Mexican Mineral Specimens, Page 8



                          Wulfenite                                                                     Fluorite                                                   Fluorite with Pyrite                                       Azurite


We carry a diversity of Mexican mineral specimens both from purchased collections and from more modern finds.  On the following pages you will encounter crystals from many locations and in many species.  Most are quite aesthetic and normally very reasonable in price however, high quality, damage free specimens of unusual or highly aesthetic species from Mexico have always commanded top dollar.   







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-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-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    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









Other side


Custom engraved acrylic base

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 barrel 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







Custom engraved acrylic base

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-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$









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    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    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    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-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-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     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    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    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-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    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       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$









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     Calcite and Amethyst.  Guanajuato, Mexico.  Ex. Dr. Steve Chamberlain Collection.  Large white tabular calcites to 4.6 cm in diameter resting on several small plates of white quartz which are coated by tiny crystals of amethyst.  Although the amethyst is quite light in color the contrast is still rather nice.  Perimeter contacts, otherwise clean.  5.5 x 4.5 x 3.5 cm.   Nice piece.  80$










OKD-507    Rhodochrosite     Santa Eulalia, Chihuahua, Mexico.  Ex Nancy Collins Collection.  This nice specimen is composed of a dark matrix rock with well formed gray dolomite crystals which in turn have beautiful little gemmy rhodos on them and the matrix.  A fine looking specimen that looks damage free but under magnification shows one dolomite crystal to be missing.  5 x 4.3 x 2 cm overall.  There is also crystallization on some of the backside of the specimen.   275$









OKD-502    Rhodochrosite on Pyrite    Zacatecas, Mexico.  Ex Nancy Collins Collection.  Several intergrown cubes of lustrous pyrite to 3 cm on edge have selective overgrowths of pink, microcrystalline rhodochrosite.  The rhodochrosites flow just over the edge of the cubes like frosting on a cake.  The pyrite was brecciated insitue and the rhodochrosite fills gaps between pyrite shards in the base of the piece.  A very interesting and reasonably attractive specimen which measures 5 x 4.5 x 4 overall.   240$








OKD-472      Amethyst     Guerrero, Mexico.   This famous and classic location has produced some of the most magnificent purple quartz ever to be found.  Specimens are uncommon on today’s market and almost non-existent in large displayable specimens.   This large piece is very displayable but not perfect.  There are several minor dings and chips, none of which are distracting but they are there.  Everything is visible in the photos so no detailing is required.  This specimen is not for the perfectionist…its for the collector who can look past minor flaws and appreciate the overall significance of a fine piece such as this.  The main point measures 10 cm long and up to 4 cm wide.  Its base is girdled by smaller points up to 6 cm each.  The color is wonderful and the luster high for this location and considering that these crystals have striations on every face (only minor ones on the terminal faces).  A fine specimen which displays well as shown.   600$








Scepter close up

OKD-392    Pyrite Pseudomorph after Pyrrhotite   El Potosi, Santa Eulalia, Chihuahua, Mexico.  There is an impressive mix of showy minerals in this very displayable pseudomorph.  The primary crystal is a large pyrrhotite which has been encrusted by well formed pyrite crystals.  There are other pseudos on this piece but the largest is 5 cm long, 3 cm wide and 1.5 cm thick.  The quartz is clear to white and very nice with the largest crystals being scepters to 1.8 cm.  There is another metallic minerals and small groups of a cram colored mineral, as well, which could be muscovite.  No noticeable damage and very aesthetic.  10.5 x 6 x 6 cm.   220$







OKD-051   Vanadinite and Calcite   Mexico.   Ex. Dr. Steve Chamberlain Collection.   7 x 6 x 3.5 cm matrix which is coated on its upper surface by reddish brown vanadinites with clear calcite overgrowths.  Crystals are small, only about .5 cm, yet are very visible due to the color contrast.  40$








OKD- 022       Danburite  Charcas, San Luis, Potosi, Mexico.  Ex. John Geiges Collection.  Very aesthetic diverging spray of crystals with minor, unknown, accessory.  Very light pink cast, highly striated…a desirable piece which could find a place in any collection.  Not the typical material.  100$







OKC-117, 30$

OKC-117     Calcite on Fluorite   Santa Eulalia, Chihuahua, Mexico.   Ex. Dr. Steve Chamberlain Collection.   Nice brown calcites to a cm on light yellow cubic fluorites.  Attractive damage free specimen.  6 x 7 x 4 cm.  30$ 








OKC-111   Wulfenite    Sonora,  Mexico.   Ex. Dr. Steve Chamberlain Collection.   Attractive 7.5 cm specimen which displays its bright yellow crystals well.  Crystals to about .5 cm each on dark matrix.  38$ 







OKC-114 back

-114 front

OKC-114   Grossular on Wollastonite    Chiapas, Mexico.   Ex. Dr. Steve Chamberlain Collection.   Small light yellow grossulars to several millimeters each on dark brown (pseudomorphed?) wollastonite crystals to 3 cm each.  6 cm overall.  Another unusual piece.  40$ 








OKC-115   Grossular on Wollastonite    Chiapas, Mexico.   Ex. Dr. Steve Chamberlain Collection.   Small light yellow grossulars to several millimeters each on dark brown (pseudomorphed?) wollastonite crystals to 3 cm each.  Some wollastonite casts.  4.5 cm overall.  Another unusual piece.  25$ 








OKC-080 Front

OKC-080  Azurite, Malachite after azurite, Quartz, Calcite on Garnet? Matrix   Zacatecas, Mexico.  Ex. Jay Walter Collection.    7.3 x 5 x 4 cm dome of colorful crystals on what appears to be brown garnet crystals.  Tiny white calcite druze on quartz to 1.5 cm with bright blue azurites and green malachites to over a cm each.  The balance of colors and crystal forms gives this piece high points on aesthetics.  Flat base, zero damage, good views from all sides.  195$







OKB-677   Amethyst   Vera Cruz, Mexico.   Ex. Dr. Steve Chamberlain Collection.  Older specimen from 1983.  Superb scepter which stands up beautifully off the matrix of smaller quartz.  Enhydros with gas bubbles are present.  Main crystal is almost 4 cm.  90$








OKA-905 Wulfenite Chihuahua, Mexico. Ex. Charles Daniel collection. 7 x 6 cm specimen has both orange and yellowish green tabular crystals up to 1 cm on a druze of yellow wulfenite. Surface is approx 1/3rd mineralized. Great form and high luster on the crystals. Sorry about the blurry photo.  25$








Fluorite and calcite from Mexico. 50$

Blue gray octahedrons of fluorite to almost 3 cm.

Calcites to a cm.

Interesting and attractive.


Datolite and danburite from Charcas, San Luis Potosi, Mexico. 78$

Datolites to over 2 cm and danburite to a cm.


Calcite from Chihuahua, Mexico. 45$

Completely terminated on all sides.



Goethite after gypsum from Santa Eulalia, Chihuahua, Mexico. 45$

Beautiful incrustation pseudomorph.


Calcites and octahedral fluorite from Naica, Mexico. 36$

Cleat to blue fluorite and calcites to 7 cm.

Nice specimen with only one nice view.


OKB-213    Fluorite    Muzquiz, Coahuila, Mexico.   7.5 x 5 cm plate which if fully crystallized on both sides by deep purple fluorites to 1.6 cm each.  Backside is not as nice.  15$








 OKB-614   Quartz pseudo. After unknown mineral (probably Quartz)   Mexico.    Dr. Steve Chamberlain Collection.   Odd specimen with less than ideal info.  10$








.7 cm fluorite in the center of larger galenas and sphalerites. Minor pyrite...all high luster. 40$







OKA-902 Aragonite Mexico. Ex. Charles Daniel collection. 19 x 12 cm plate of stalactitic aragonite masses rise to several cm off the aragonite matrix. Tan/white specimen. two of the masses have dings. Attractive cabinet specimen. 30$




Chamberlain Collection specimens are photoed and briefly described below..


OKB-500 Pyrite/ Sphalerite Zacatecas, Mexico. Ex. S. Chamberlain, Aqu. 1977. 7 x 5 cm plate of big opaque sphalerites to 4 cm each. High luster with a dusting of pyrite crystals on one side. Sorry about the lousy photo.  15$




OKB-501 Calcite Chihuahua, Mexico. Ex. S. Chamberlain, Aqu. 1978. 5.5 x 5 cm dome of brown calcites to over 3 cm ea. sprinkled with tiny white... calcites? Showy. 20$




OKA-912 Wire Silver Zacatecas, Mexico. Ex. Charles Daniel collection. Tiny 1.5 cm thumbnail specimen with wires to .5 cm rising from light gray quartz matrix. 18$






OKB-505 Fluorite Durango, Mexico. Ex. S. Chamberlain, Aqu. 1978. 3.5 x 3 x 2 cm group of cubes. Darker purple, wild looking hoppered form. 5$



OKB-506 Smithsonite Chihuahua, Mexico. Ex. S Chamberlain, Aqu. 1976. Light purple, 6 cm, botryoidal specimen with a nice silky luster. Attractive piece. 35$



OKB-508 Calcite Guanajuato, Mexico. Ex. S. Chamberlain, Aqu. 1983. Big plate, 12 x 10 cm with white dog tooths on yellow calcite. Crystals are small....5 cm at their largest. 18$



OKB-509 Calcite Chihuahua, Mexico. Ex. S. Chamberlain, Aqu. 1976. Tan colored casts grown over primary calcite crystals which are now gone. One tip is broken off and you can see how each crystal is actually hollow. 8 x 7 cm with crystals to 3 cn each. 20$



OKB-511 Topaz Guanajuato, Mexico. Ex. S. Chamberlain, Aqu. Ex. C. B. Sawyer Collection, 1978. Big 5 cm grouping of sand included crystals. Nice sherry color in the gemmy areas. 38$






OKA-311 Calcite (Var. Helectite) Chihuahua, Mexico. Very light yellow cave formation that branches out in three directions and has another crystal bunch in the center. 10 cm height. Displayed on glass. Translucent and very glassy in its appearance. No damage. 36$







OKA-598C     Danburite/ Calcite San Luis, Potois, Mexico. Yellow calcite crystals (small) form a sheath surrounding the base of each of these crystals of danburite. Terminations are all damage free and fully exposed above the calcites. Danburites are clear/ light pink in color. These are unusual and superb display pieces. I got a great deal on them and so have them at a lower price than is the norm. 100 to 200$ would be a more typical price. Sure to please.  This one is a stocky 7 x 5.5 cm crystal.   50$






OKA-602 Smithsonite Sierra Mojada, Coahuila, Mexico. Ivory colored mass of iridescent smithsonite. 7 x 5 x 5 cm piece. 25$



OKA-609 Fluorite Muzquiz, Coahuila, Mexico. 8.5 x 6 x 4 cm piece is mineralized on both sides with purple crystals to 1.3 cm each. 15$




OKA-390 Selenite Naica, Chihuahua, Mexico. 8 cm cluster on buff colored matrix. Clear crystals with great form. From the collection of Ken Shinline. 22$



OKA-497 Mimetite Chihuahua, Mexico. 6 to 8 small (to .4 cm) bright yellow balls of mimetite on a light gray matrix. Fine contrast of colors in this 7 x 5 cm piece. 15$



OKA-678 Grossular Sierra de Creces, Mexico. I usually don¹t get these raspberry colored garnets due to the extensive damage to almost every specimen. Here are five that are exceptional...specimens are 5 to 7 cm each and have lots of garnets in each. Each grossular is .5 to 1.5 cm. Great color and form in all these. 50$ and 60$ each




OKA-744 Amethyst Geuraro, Mexico. After 6 years of looking for this material I final found a flat (wholesale!!). Amethyst phantom in clear quartz. All are large points with smaller attached sister crystals around the main crystal. Crystals usually taper toward tip. Most have enhydros, some with gas bubbles. This is extremely difficult to get in specimens more than a couple cm long. Pieces are usually only available from old collections. This is a classic site often discussed in the historic texts. Grab these up fast.


OKA-744B 6.4 cm pair of crystals with a third broken off. 20$


OKA-744I 6 cm crystal with a 3.5 cm branch and others. 30$



We have lots of Minerals from Mexico minerals!




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