May 2014 Update, Page 2

 

The Thomas G. Fowler Collection

 

Thomas Fowler, of Stamford Connecticut, was a mineral enthusiast, an avid outdoorsman throughout his lifetime (1943-2006), and the President of an internationally recognized design firm.  He was an active field collector of minerals and member of the Stamford Mineralogical Society during the 1960’s and 70’s.  His primary area of interest was in the minerals of South Africa of which he built a fine collection in both depth and breadth.  His Tsumeb suite numbered approximately 1,500 specimens, many of which are exemplary: dioptase, cerussite, and smithsonite are examples of

species of which he had many top pieces.

 

 

 

OKL-565

OKL-565    Smithsonite with Tarnowitzite    Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.   An atypical specimen with nice translucent, honey colored calcite rhombs on tan colored smithsonite stringers of micro crystals.  The aragonite, variety tarnowitzite crystals are well formed but small, to about a cm each.  There is one cleaved calcite but it blends in nicely and is not distracting.  Unusual but certainly not visually stunning.  8.5 x 4.5 x 3.3 cm.   $325

 

 

 

 

 

OKL-566

Back

OKL-566    Wulfenite    Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.   7.1 x 4.5 x 4 cm with crystals to .6 cm on edge.  One small damaged area only really evident with magnification, otherwise very fine condition.  Very bright, displayable piece at a fantastic price for this classic, difficult to find and easily damaged material.   $350

 

 

 

 

 

 

OKL-567

OKL-567    Hydrocerussite    Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  Uncommon material sporting well-formed reticulated crystals of good size.  One is broken so the price will be a giveaway… 5.1 x 4 x 2.2 cm.   $60

 

 

 

 

 

 

OKL-568

OKL-568    Cerussite with Mottramite   Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  Healed floater with only one tiny chipped spot on the matrix of a couple millimeters.  Really interesting crystals of good quality.  4 x 3 x 2 cm.   $40

 

 

 

 

 

 

OKL-569

OKL-569    Smithsonite    Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.   The more typical material for form, clarity and color.  Clean crystals in this plate, no damage.  4.1 x 3.5 x 1.5 cm.  An excellent example for the price.   $60

 

 

 

 

 

 

OKL-612

OKL-612    Cerussite, Smithsonite, Tennantite, Quartz      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.   An attractive, well placed cerussite twin and nicely formed tennantite crystals dominate the piece seen here.  No damage.  5 x 3.6 x 2 cm with cerussite crystals to 1.6 cm.  Excellent quality.   $145

 

 

 

 

 

 

OKL-613

OKL-613    Smithsonite, Cerussite, Quartz    Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.   A white translucent cerussite twin measuring almost a cm sits amongst large sharply formed smithsonte crystals.  5 x 3.5 x 2 cm with smithsonite crystals to 1.2 cm each.  The piece is damage free, of nice luster, and a fine example of this classic material.   $250

 

 

OKL-614

Back

OKL-614    Cerussite, Smithsonite, Tennantite    Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.   This is a very fine example of an uncommon color of smithsonite from Tsumeb.  It is damage free piece that has nice coverage in an aesthetic arrangement on its front.  A mineral, crystal mix on the backside is a bonus but those crystals are much smaller.  6.7 x 5.6 x 2.1 cm.  Excellent quality.  Sizable, rare, classic, attractive, and well-priced…  $250

 

 

 

 

 

 

 

 

 

OKL-615

OKL-615    Dioptase    Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.   4.7 x 3.5 x 3 cm with crystals to 1.2 cm each.   The specimen is vibrant and attractive.  The large crystals are very translucent and the only distraction is a small spot of contact near to one of the edges.  All the crystals are in wonderful condition.  $250

 

 

 

 

 

 

OKL-616

Back

OKL-616    Cerussite     Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  6 x 5 x 3.5 cm with cerussite crystals to 3 cm each.   Two edge crystals arte smashed, one could easily be trimmed away.  The main crystals are problem free, quite transparent, and beautifully twinned.  This is actually a high quality piece but because it needs some TLC the price will be lower.   $350

 

 

 

 

 

 

OKL-617

OKL-617    Smithsonite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  An attractively stacked grouping of tiny cinnamon to brown colored crystals.  Coatings are damage free on the front and much of the sides.  The top has one very tiny crystal with damage and there are a couple minor side contacts, none of which draw your eye.  Overall a fine quality specimen of smithsonite in an uncommon color.  4.1 x 4 x 2.9 cm.   $300

 

 

 

 

 

 

OKL-618

OKL-618    Smithsonite, Quartz, Mimetite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.   Lots of variety on this tall tapering stack of crystals.  The smithsonite is clear but appears black due to the underlying matrix.  Minor mimetite will have to be looked for to notice and liberal quartz crystals.  I’m not seeing any damage to the piece.  6.6 x 4.6 x 2.5 cm with individual crystals to 1.2 cm each.   $250

 

 

 

 

 

 

 

OKL-671

Back?

OKL-671    Tarnowitzite on Calcite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.   This specimen and the next were the two best examples of this uncommon Tsumeb material in the collection.  The one seen here is 7.6 x 4 x 3.2 cm.  The tarnowitzite crystals (a variety of aragonite) are not large but they are beautifully formed and attractively displayed on well-formed transparent to translucent rhombs of honey colored calcite.  The piece is damage free and only has two small areas of contact, one on the back and one on one end (side).  It displays nicely several ways.  An uncommon classic!  $350

 

 

 

 

 

 

 

OKL-673

Back

250

OKL-673    Tarnowitzite on Calcite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.   This specimen and OKL-671 were the two best examples of this uncommon Tsumeb material in the collection.  The one seen here is 10 x 7 x 6 cm.  The tarnowitzite crystals (a variety of aragonite) are up to 2.2 cm each and they are beautifully formed and attractively displayed on well-formed transparent to translucent rhombs of honey colored calcite.  The piece is damage free and only has a couple areas of contact.  The back is heavily crystallized too, but it is only calcite.  It displays nicely several ways.  An uncommon classic!  $350

 

 

 

 

 

 

OKL-674

OKL-674    Calcite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.   This damage free piece measures 4.7 x 4 x 2.8 and is composed of the more common, stepped growth blades of calcite so characteristic of Tsumeb.  They are translucent and a light orange color.  $30

 

 

 

 

 

 

OKL-674

OKL-675    Tourmaline with Lepidolite         Dunton Quarry, Newry, Maine.  Ex. Thomas G. Fowler collection.   A rough looking but actually well-formed and nicely terminated crystal of deep pink and light green color.  It measures 4.4 x 3 x 2 cm overall.  Nicely formed all around with attachments of lepidolite that are also well crystallized.  It sits on edge with crystals nicely positioned.  Nicely translucent in mostall areas but not what I would call transparent.  Better than the images indicate.  $325

 

 

 

 

 

 

OKL-676

OKL-676    Mimetite      San Pedro Corralitos, Chihuahua, Mexico.  Ex. Thomas G. Fowler collection.   This appears to be the desirable material from the Benny Finn find in a small cabinet sized piece measuring 7.2 x 6.3 x 2.4 cm.  The color is mixed yellows and the luster average. One tiny touch mark can be seen in the central area of the specimen otherwise it is in good condition.  A modern classic.  $450

 

 

 

 

 

OKL-677

OKL-677    Serandite and Analcime    Mt. St. Hilaire, Quebec, Canada.  Ex. Thomas G. Fowler collection. This one measures 3.2 x 2.2 x 2 cm with the blocky serandite crystal measuring 2.8 cm long.  The crystal is of nice pink color, good luster, and is double terminated.  There are matrix contacts but the serandite is damage free and the surrounding analcimes are not bad.  $275

 

 

 

 

 

OKL-678

Side view

Galena crystal

Best mimetite

OKL-678    Mimetite and Galena      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.   This is a floater with bullet shaped GEM crystal of mimetite to only a .6 millimeters each with most being a good deal smaller.  The galenas are in octahedrons, heavily coated by mimetite.  Quite flashy due to all the tiny crystals of yellow mimetite.  Classic material and VERY well priced for a damage free example.  $300

 

 

 

 

 

OKL-679

OKL-679    Smithsonite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.   Tiny, gemmy clear crystals of smithsonite with a slight copper colored ting.  An unusual looking specimen for the location.  5.5 x 2.5 x 2.2 cm.  No damage.  $85

 

 

 

 

 

OKL-680

OKL-680    Cobaltoan Smithsonite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection. Pink crystals to a cm each on a matrix composed of a couple of stalactites of what is likely tennantite.  5.3 x 4 x 3 cm.  No damage except contacts where the stalactites were once attached within the vug.  $185 

 

 

 

 

 

 

OKL-681

OKL-681   Cobaltoan Smithsonite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.   Pink crystals on dark silver tennantite.  There are several contacts but the majority of the specimen is free of damage.  Dirty!  Needs a cleaning.  4.8 x 4.8 x 3 cm.  $100

 

 

 

 

 

 

 

OKL-681

OKL-682    Smithsonite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.   This example is unusual for both its color, a amber tone, and its crystal form, elongated crystal that are almost bullet shaped.  Crystallized on all sides with some, but minimal, contacts.  Good luster.  A very nice, and unusual piece.  5.2 x 2.5 x 2.2 cm overall.  $175

 

 

 

 

 

 

 

OKL-464

OKL-464    Dioptase on Calcite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  A nice plate that sits on edge for display.  Small crystals but attractive, gemmy and damage free.  6.4 x 4 x 2.1 cm.  Great coverage.  $325

 

 

 

 

 

 

OKL-465

Back

OKL-465    Dioptase on Calcite       Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  A very high quality specimen even though it has a tiny area of damage (or contact) to the edge of the big crystal.  The price is reduced on this exceptional miniature to accommodate that flaw.  Large, vibrant green crystals on contrasting matrix that is also well crystallized.  Sits and views well.  6 x 4 x 3 cm with large crystals to 1.2 cm each.  $225

 

 

 

 

 

 

 

OKL-466

OKL-466    Dioptase on Smithsonite     Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  Fine large crystals on matrix coated by smithsonite.  A far less common association than calcite or duftite.  No damage, very three dimensional, and sits nicely for display.  Minor duftite.   6.4 x 5 x 4.1 cm with crystals to 1.1 cm each.  $395

 

 

 

 

 

 

 

OKL-467

OKL-467    Dioptase on Calcite     SOLD   Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  A beauty with superb color and coverage.  A VERY tiny chip to a spot which you will have to inspect closely to even find.  6.5 x 4.3 x 3 cm plate.  Excellent quality.  $360

 

 

 

 

 

 

 

OKL-468

Back

OKL-468    Dioptase on Calcite Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  This wonderful example is richly colored showing some secondary dioptase overgrowths and minor smithsonite.  Full coverage on front top and part of back with robust, high quality crystals.  Two tiny crushed crystals.  6 x 4.2 x 3.7 cm with crystals to a cm each.  Very high quality, overall.  $450

 

 

 

 

 

 

 

OKL-469

OKL-469    Dioptase on Calcite Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  This attractive specimen has nice coverage on white calcite.  It is domical and views well from all directions except the back.  One very tiny missing crystal can be seen with the aid of magnification.  6.7 x 4.7 x 4.3 cm overall.  A great piece of this classic material.   $395

 

 

 

 

 

 

OKL-670

OKL-670    Dioptase on Calcite Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  5 x 3.7 x 3.3 cm with crystals to 1.1 cm each.  A nice open vug with several clean crystals, one being rather large and clean.  Displays well several different ways.  No damage with the exception of a couple tiny crystals being missing near the edge.  $285

 

May 2014 Update, Page 3

 

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