The Denver 2017 Mineral Showrooms

* Updated November 3rd, 2017 *

MIN#Denver2017-41 Reserved!

Stunningly beautiful combination of a large pink Fluorite flower perched atop Muscovite and surrounded by Aquamarine crystals!
True museum quality specimen that could easily serve as a centerpiece in the finest collections. The pink Fluorite at top, which I call
a flower for its color and positioning, measures a large 7 cm in size and is absolutely perfect on all sides with complete, satiny-lustrous
faces which are are translucent to light. The color is a rich pinkish blush with a hint of red. The Fluorite can be seen from all sides as it
sits atop the center of the Muscovite blades and is surrounded by gemmy light blue Aquamarine crystals, many of which are doubly
terminated. This is one of those Pegmatite specimens that takes your breath away and there are no detractions or contacts anywhere.
From Chumar Bakhoor, Hunza Valley, Gilgit District, Gilgit-Baltistan, Northern Areas of Pakistan.
Measures 11 cm by 15.8 cm by 9.3 cm in total size.

Ex. Obboda Mineral Museum Collection
Comes with a custom made,engraved display base
Price $34,500

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MIN#Denver2017-42 NEW!

Brilliant specimen of Native Gold on white Quartz with well defined crystals perched across the top!
Now this is something you definately don't see every day and that's an Australian Gold specimen with crystals.
Most Australian Golds are semi-crystalline at best and most are found as nuggets with Quartz or Hematite
stained matrix. This specimen displays half a dozen or so crystals across the top portion and I was so surprised
when I saw the specimen for the first time that I had to examine it closer with a loupe to verify what I was seeing.
Apparently there was just enough of an opening inside the Quartz matrix that crystals were able to form. There's
a slight bit of rounding due to years of weathering in the open field but the crystals are still sharp and distinct
for the locality. An Australian Gold that is both rare and unique in addition to being super lustrous with rich color.
From the Gold Field in Western Australia.
Measures 5.3 cm by 3 cm by 2 cm in total size.

Price $12,500

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MIN#Denver2017-43 NEW!

Rare combination of Caledonite with Linarite crystals on Quartz matrix!
Beautiful classic combo of two varieties of blue mineral crystallization. The blue Caledonite crystals are situated along
the top right edge while the deep royal blue Linarite crystals are situated along the lower left of the Quartz matrix.
The crystals are in great shape with an intense glassy-luster reflecting light as the specimen is rotated side to side.
From the Bliss Pocket, Reward Mine, Reward, Russ District, Inyo Mts (Inyo Range), Inyo County, California
Measures 5 cm by 7.8 cm by 4.2 cm in total size.

Price $2850

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MIN#Denver2017-44 NEW!

Beautifully intricate specimen of Native Wire Silver in "tree" form from the mines in Freiberg, Germany!
This is without a doubt, a very aesthetic Native Silver. Not only is it incredibly well balanced and graceful,
it's also displayable from both sides! The bottom portion of the specimen is composed of numerous curling
wires of Silver on an Acanthite base. If you look very closely at the base, you will also see what appears
to be tiny crystals of golden Pyrite scattered atop and between the wires on both the front and back sides.
These crystals also impart a slight rainbow iridescence to the lower portion of the specimen and I also see
what looks like tiny Quartz crystals attached to the back side wires. This is easily one of the best looking
miniature sized German Silver specimens I've seen recently and definately one of the most arborescent
in structure. It's untouched with all of its original skin and patina and I don't detect any old cleaning.
From the Himmelsfürst Mine, Brand-Erbisdorf, Freiberg District, Erzgebirge, Saxony, Germany.
Measures 7 cm by 5.6 cm by 2.1 cm in total size.

Ex. Wendel Mineral Collection
Price $14,500

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MIN#Denver2017-45 NEW!

Gorgeous specimen of botryoidal Rhodochrosite draped atop shiny Goethite matrix!
The Rhodochrosite is of the deepest color and contrasts beautifully with the similiarly botryoidal Goethite.
This classic Rhodo specimen dates to pre-1900 and the locality was once the world standard for fine Rhodochrosite
specimens. The color is translucent cherry-red and its rolling surfaces are covered with a fine satiny luster. Very nice!
From the Wolf Mine, Herdorf, Siegerland, Rhineland-Palatinate, Germany.
Measures 7 cm by 5.5 cm by 4.7 cm in total size.

Ex. Tausch, A. Berger, R. Metzger, Franz Lammer Collections
Price $2850

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MIN#Denver2017-46 NEW!

Lovely specimen featuring gemmy crystals of purple Adamite on Goethite matrix!
Glassy lustrous and gemmy-translucent, these Adamite crystals display chisel tips of pinkish-purple
with a border of yellow Adamites. The glassy crystals are in excellent condition with full terminations
and barely a contact anywhere. They sit nestled inside the concave structure of the brown matrix.
From the Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico.
Measures 6.2 cm by 4.8 cm by 3.1 cm in total size.

Price $2850

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MIN#Denver2017-47 Sold!

Bizarre and unique looking specimen of Calcite crystals inside a large hollow matrix tube!
From a quarry that's been mined since the late 19th century comes this odd specimen featuring dozens
of sharply terminated Calcite crystals inside a hollow matrix tube. The matrix actually opens on both
ends and is composed of a hard shell of micro-crystalline Calcite. In excellent condition with no damage.
From the Millington Quarry, Bernards Township, Somerset Co., New Jersey.
Measures 16.2 cm by 11.8 cm by 13.1 cm in total size.

Ex. Butkowski, G & J Megerle Collections
Price $1450

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MIN#Denver2017-48 NEW!

Gorgeous cabinet specimen featuring elongated Wulfenite crystals surrounded by Green Mimetite!
These appeared last decade and quickly disappeared into private collections. They are as beautiful as they are interesting.
The orange on green color combination is incredible but the different crystal habits is just as eye catching I think. This specimen
in particular, features a 2 cm pyramidal Wulfenite crystal! The green botryoidal Mimetite is satiny lustrous and appears in a
cluster near the center and as isolated nodules scattered about the exterior. In excellent condition with incredible eye appeal.
From Level 6, San Juan Poniente Vein, Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico.

Measures 7.8 cm by 10 cm by 6.3 cm in total size.

Price $4850

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MIN#Denver2017-49 NEW!

Classic specimen of Acanthite cubes in cluster from Germany!
True museum quality Acanthite specimen that is actually from the Smithsonian Institution Collection! This is a Freiberg
Acanthite, circa mid 1800's, which is every bit as impressive as its provenance. Specimens of Silver minerals from Freiberg
are European classics, if not world classics. Acanthite is the stable, low temperature form of the Silver species Argentite.
These crystals are very attractive with their superb luster and varied cubic forms. The largest complete cube is 1 cm across,
and all are very sharp as they line up perfectly. Bosch and Smithsonian labels are included, showing off the great provenance.
From the
Himmelsfürst Mine, Brand-Erbisdorf, Freiberg District, Erzgebirge, Saxony, Germany.
Measures 3.2 cm by 2.1 cm by 1.9 cm in total size.

Ex. Smithsonian Institution, Carl Bosch, Kay Robertson Collections
Price $3500

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MIN#Denver2017-50 NEW!

Absolutely gorgeous and glassy crystals of emerald-green Dioptase with Calcite on Duftite covered matrix!
One of the prettiest combos you'll ever see from the Tsumeb Mine and in my opinion, even prettier than
the more common Dioptase on white Calcite specimens. The Dioptase crystals are in excellent condition
with only a few minor contacts. They are accented by white Calcite crystals on a matrix surrounded by
yellow-green Duftite. Stunning specimen and very well trimmed. The Dioptase xls measures to 1.8 cm.
From the Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia.
Measures 4.8 cm by 9.2 cm by 4.3 cm in total size.

Price $3250

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MIN#Denver2017-51 NEW!

Lustrous dendritic crystalline fans of Native Silver with Quartz matrix!
Very aesthetic and brilliant, this specimen displays two 1 inch dendritic fans that are visible
from both sides, making the specimen displayable from both the front and back. The structure of
the fans is very distinct and both sit atop a base of Native Silver with bits of Quartz in the recesses.
From the Seneca #1 Mine (Gratiot Mines), Mohawk, Keweenaw County, Michigan.
Measures 4.3 cm by 3.1 cm by 3.6 cm in total size.

Price $2850

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MIN#Denver2017-52 NEW!

Gorgeous Polar Ural Smoky Quartz crystals on Marcasite accented Quartz crystal matrix!
Polar Ural Smoky Quartz is among the finest in the world and specimens are highly prized for their clarity
and color. They are frequently cut into gemstones but fortunately this large specimen has been preserved
in its natural state. The luster atop the crystal faces is intense and the color is a smoky-golden which glows
through incredibly clear interiors. In excellent condition with only a few very minor contacts scattered about.
From the Dodo Mine, Polar Urals, Tyumenskaya Oblast', Western-Siberian Region, Russia.
Measures 10.7 cm by 8.9 cm by 10.6 cm in total size.

Price $2450

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MIN#Denver2017-53 NEW!

Lovely specimen of rice-variety Blue Smithsonite with Aurichalcite and Barite blades on matrix!
This is a rarer variety of Kelly Mine Smithsonite - much rarer than the botryoidal variety, and the
luster it exhibits is satiny smooth! The photograph above displays some of the brilliance but the piece
must be seen in person to be fully appreciated. The rice crystals are in excellent condition and are well
protected as they are situated in a concave recess, nestled between blades of Barite. Aurichalcite accents
the bottom portion and back side surfaces of the specimen. In excellent condition with a great provenance.
From the Kelly Mine, Magdalena, Magdalena District, Socorro County, New Mexico.
Measures 10.6 cm by 9.8 cm by 4.8 cm in total size.

Ex. F. John Barlow, Charles M. Noll Collections
Price $1850

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MIN#Denver2017-54 NEW!

Super lustrous and glassy large Topaz crystal from Colorado!
I don't see too many of these crystals available for sale in the marketplace and this one came from an
European collection I think. It's a big crystal with a wonderful termination and incredible surface luster
rolling up and down the striated surfaces. The color is a light sea-green and the crystal interiors are quite
brilliant. The Topaz is in great shape with some of the normal matrix influence along the bottom of the back
side and some light etched near the base. If you're looking for a large, impressive Colorado Topaz, this is it!
From the Topaz Mountain Gem Mine, Spruce Grove, Tarryall Park, Park Co., Colorado.
Measures 5.5 cm by 4.7 cm by 3.8 cm in total size.

Ex. Peter Megaw Collection
Price $1500

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MIN#Denver2017-55 Sold!

Exceptional old museum classic specimen of Native Copper featuring large crystals and wires with Chrysocolla!
This is an amazing Native Copper plate, heavy and solid, with crystals of immense size and thick 1 cm wide Copper
wires inside the recess near the bottom of the plate. This plate was collected sometime in the mid to late 1800's and
spent many years displayed in the mineral museum founded by Ron Harder. It's one of the most impressive Native
Coppers I've ever seen and is completely original with a gorgeous reddish-brown patina over super lustrous crystal
surfaces. The back side of the plate is mostly flat as it formed against hard matrix but the front side is an amazing
display of large, well formed crystals and wires which I find amazing. This is the first plate I've seen with wires of
this size in combination with crystals. This specimen is a true centerpiece and belongs in the finest of collections.
Circa 1860-1890 - From the Central Mine, Central, Keweenaw County, Michigan.
Measures 19 cm by 17 cm by 8.4 cm in total size.

Ex. Jeweler's Mutual Insurance Co., Ron Harder (Neenah, Wisconsin) Collections

Price $28,500

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MIN#Denver2017-56 Sold!

Beautiful specimen of translucent green Cuprian Austinite crystals in cluster atop brown matrix!
I don't see to many of these specimens but this is easily the finest Austinite I've had on the website
in years. These green crystals are incredibly lustrous and translucent to light. The color is what I would
describe as evergreeen with a bit of teal blue. This ia an Austinite that would look great in any collection
and keep in mind that these are terminated crystals, not the more commonly seen balls or aggregates.
From the
Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico.
Measures 5.2 cm by 7.2 cm by 3.7 cm in total size.

Price $985

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MIN#Denver2017-57 NEW!

Beautiful, frosty green cube of Fluorite on a Calcitic covered matrix!
I love this specimen. The cube is absolutely perfect, measuring nearly 4 cm across the top corners.
It's best described as a frosty mint-green and it's covered by a satiny luster along with sparkling Calcite
accents. I just love the way the cube sits on the matrix, especially the bladed Calcite structures at bottom.
From the Nikolaevskiy Mine, Dal'negorsk, Kavalerovo Mining District, Primorskiy Kray, Far-Eastern Region, Russia.
Measures 5 cm by 5.4 cm by 5.3 cm in total size.

Price $895

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MIN#Denver2017-58 NEW!

VERY RARE! An amazing old classic from Arizona featuring lustrous crystals of Native Silver on both sides!
This is a very rare specimen of crystalline Native Silver and Silver leaf on a matrix richly impregnated with Silver. Circa 1880's, it's from the famous
Silver King Mine in Arizona. The Silver has incredible luster, both bright and with excellent patina. The Silver King Mine was discovered in 1873
and was depleted by 1888. This small cab also has an equally rich history, having been in both the Gathenye and Schwethelm collections previously.
This is a fine piece for an Arizona and or Silver mineral collection. Specimens from this locality rarely become available so opportunity knock here!

From the
Silver King Mine, Comstock Wash, Pinal Mts, Pinal County, Arizona.
Measures 6.8 cm by 5.7 cm by 2.3 cm in total size.

Ex. Herb Obodda, Godehard Schwethelm, A. Gathenye Collections
Price $4500

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MIN#Denver2017-59 NEW!

Very Rare! Beautiful combination of Rhodochrosite crystals atop Quartz var. Amethyst!
This specimen is AMAZING! It dates back to 1818 and actually still has the original handwritten label
from 1818 in addition to one from 1909. This was collected in Schemnitz, Hungary but now the location
is part of Slovakia. The Rhodochrosite appears as elongated, tubular crystals of a reddish-orange color
and they are evenly scattered about the specimen, draped atop the Amethyst crystal faces mostly along
the left and upper left sides. There's nothing on mindat that compares to this specimen appearance-wise
and considering that it's nearly 200 years old, I wonder how many of this variety and combination exist.
From Banská Štiavnica (Schemnitz), Banská Štiavnica Co., Banská Bystrica Region, Slovakia.
Measures 6.4 cm by 4.7 cm by 4.2 cm in total size.

Ex. Delar(?), Kay Robertson Collections

Price $2450

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MIN#Denver2017-60 Sold!

Deep red crystals of Spinel in cluster with Calcite!
There's a lot of Spinel here, with the largest crystal measuring 2.1 cm in size. The color is a very deep,
vibrant and translucent red while the crystal faces on the top right crystal are sharp and glassy lustrous.
From the Morogoro, Uluguru Mts (Uruguru Mts), Morogoro Region, Tanzania.
Measures 3.8 cm by 4.2 cm by 2.1 cm in total size.

Price $985

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MIN#Denver2017-60b NEW!


Satiny lustrous cluster of coated Calcite crystals!
The Calcites are pointed and display very sharp, angular edges. I thought the specimen might be a cast when I first saw
it but it is solid on the bottom with a white base. This indicates that the very angular Calcite crystals are actually bright
white beneath the golden-tan druse Calcite coating seen on the exterior. In excellent shape with full, complete terminations.
From the Droujba Mine (Drujba), Djurkovo Complex, Laki (Luki), Laki Obshtina, Rhodope Mts, Plovdiv Oblast, Bulgaria.
Measures 5.2 cm by 8.2 cm by 5.1 cm in total size.

Price $985

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MIN#Denver2017-60c NEW!

Very rare and unusual specimen of Calcite ps after Glauberite crystals with green Copper staining!
This is an interesting specimen with an excellent clustering of blades and a post-mining green coloration.
These are found near the Camp Verde salt mine and are found as floaters in the matrix. Classic Arizona!
From Camp Verde, Camp Verde District, Yavapai County, Arizona.
Measures 6 cm by 7 cm by 4.1 cm in total size.

Ex. Ex. Van Tichelen Pseudomorph Collection
Price $985

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MIN#Denver2017-60d Sold!

Exceptional classic specimen featuring incredibly sharp Native Copper crystals with Calcite!
This is an amazing Michigan Copper, circa 1860's, which was formally in the collection of the Philadelphia Academy.
The crystals are incredibly sharp, varying in size, but all are untouched with their original skin. The patina is a antiquish
reddish-brown over slightly reflective, lustrous crystal faces. The crystals are aesthetically placed atop layered rhombs
of white Calcite which have been chipped, not etched away, to reveal more of the Copper crystals beneath.
From the Copper Mining District, Keweenaw Peninsula, Michigan.
Measures 4.3 cm by 6.8 cm by 3.2 cm in total size.

Ex. Philadelphia Academy Collection
Price $3500

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MIN#Denver2017-60e NEW!

Gorgeous large cabinet display specimen featuring a deep Golden Calcite crystal, doubly terminated, on Calcite covered matrix!
Easily the finest specimen from the Cumberland Mine that I've seen in a long time. The Calcite itself measures nearly 12 cm in
size and is doubly terminated at both ends with a deep, deep, golden gemminess which allows light to easily pass through and
make the crystal GLOW!! The large Calcite sits centered atop a matrix which is studded, top to bottom, with small golden Calcites.
I know how fussy Calcite collectors can be but let me assure you, this crystal is nearly pristine with full tips and superb surface luster.

From the
Cumberland Mine, Central Tennessee Ba-F-Pb-Zn District, Smith County, Tennessee.
Measures 17.3 cm by 13.3 cm by 13 cm in total size.

Ex. Barnett Mineral Collection
Comes with a custom made, engraved display base
Price $4500

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MIN#Denver2017-60f NEW!

Classic specimen featuring thick Native Silver crystalline dendrites!
A superb, spinel-twinned Silver crystal, 4.6 cm in length, flares into a flag shape at its termination on this superb matrix miniature.
Several spinel twin crystals come off the main crystal at an angle, imparting a "herringbone" effect. This Silver is definitely competition
quality and stands among the top quality of specimens in its size class for Batopilas with a unique style. Note that this is NOT from the
more modern finds of the 1980s because those were much thinner and fragile. This older, more robust style came out in several finds
dating back to near 1910, though it is impossible to say from which one this came now. A very impressive, lustrous, and sturdy miniature.
From the New Nevada Mine, Batopilas, Andres del Rio District, Mun. de Batopilas, Chihuahua, Mexico.
Measures 4.5 cm by 2.5 cm by 2.1 cm in total size.

Price $2500

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MIN#Denver2017-60g NEW!

Amazing specimen featuring Native Copper pseudomorphing and replacing an old piece of mining timber!
This is the most impressive Copper replacing of wood that I've ever seen. At 20 cm in total length, it's also
the largest piece of  Copper replaced wood that I've ever offered on the website. This specimen is heavily
pseudomorphed down it's entire length as is quite obvious from the front and back pictures above. Some of
the original wood is still hanging on, giving the specimen further stability but this is one fine looking pseudo.
From the Pyramid Mining District, Washoe County, Nevada.
Measures 4 cm by 20 cm by 3.2 cm in total size.

Ex. Van Tichelen Pseudomorph Collection
Price $2500

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