March 2016 Update, Page 2


Just Acquired

The Harold L. Dibble Collection

Harold Dibble, is the author of "Quartz: An Introduction to Crystalline Quartz", and was a well known east coast collector.  He passed in 2014 and his collection of fine minerals will be offered in upcoming months.  Some of his most important specimens grace the displays in the Seaman's and Smithsonian museums.  Harold's passions also included art and he was early in recognizing minerals as Nature's works of art.  Many of his minerals reflect this ideal. 





OKM-826     Spessartine with Feldspar     Navegador Mine, Conselheriro Pena, Minas Gerais, Brazil.  Ex. Harold L. Dibble collection.  This is a large, highly etched single crystal with many of the etched voids mineralized by a white feldspar.  3.9 x 3.1 x 2.7 cm.  No damage.  $250









OKM-827     Datolite    Keweenaw Peninsula, Michigan.  Ex. Harold L. Dibble collection.  Previous collection tags indicate the piece may be from the Copper Falls Mine.  A very large 10.2 x 7.2 cm slab that measures a consistent .8 cm thick.  No damage.  Good color due to inclusions of copper.  Nicely polished.  $150










OKM-828     Wolframite    Panesquevies, Portugal.  Ex. Harold L. Dibble collection.  Thick 5.2 x 3.5 x 2.3 cm compound crystal.  It has a stable crack down center (only shows from one side) and a cleave to a rider crystal but otherwise in good condition.  Mica crystal overgrows and some calcite.  Calcite crystals cover base (not shown).  Floater.  Nice in hand, good luster and interesting form.  $300









OKM-829     Fluorite     Cave-In Rock, Illinois.  Ex. Harold L. Dibble collection.  Nice yellow cubes to 5.6 cm on edge.  Thin light purple phantom along all the crystal's edges.  Transparent with moderate (typical) internal fracturing.  7.5 x 7.3 x 4.5 cm.  Healed surfaces, excellent luster, and light chatter on some edges, as seen in images.  Desirable color.  $180









OKM-101      Adularia and Chlorite   Val Crystallina, Lukmanier, Graubunden, Switzerland.  Ex. Harold L. Dibble collection.  4 x 4 x 3.5 cm floater with the largest crystals being twinned.  No damage, thick chlorite inclusions are exposed on surfaces of adularia crystals.  Perfect from every side.  Sweet little miniature!  $350









OKM-830    Feldspar (variety Labradorite)     Kragero, Norway.  Ex. Harold L. Dibble collection.  Prev. John Sinkankas, Prev., U.S. National Museum.  What a fantastic provenance!  Famous author and mineralogist John Sinkankas added this piece to his collection through exchange with the Smithsonian.  3 polished surfaces and all show almost 100 % play of blue colors.  A fine example measuring 13.3 x 5.8 x 4 cm.  One more side with the catalog numbers on it is sawn but not fully polished.  John donated this specimen to the 1999 Rochester Symposium fundraising auction.  If I discover it was figured in one of his many books I may cry for selling it.  All tags are present.    $500









OKM-831    Beryl    Minas Gerais, Brazil.  Ex. Harold L. Dibble collection.  A very clear beryl crystal that is obviously entirely etched.  6 x 4 x 2.8 cm.  Floater with small cleave on on termination (bottom in all images).  Excellent condition, nice luster, aesthetic form for those who like etched crystals.  $225









OKM-999    Barite     Indian Head Rock, Basin, Jefferson County, Montana.  Ex. Harold L. Dibble collection.  4.7 x 4.3 x 3.2 cm.  The specimen is all blocky crystals most showing some of the typical cavernous surfaces filled by secondary growth barites.  Excellent color and translucence for the locality.  The specimen is damage free with healed faces and only a couple contacts under the base (almost a floater).  No damage anywhere.  Finding anything in really good condition from this location is sizes larger than thumbnails is difficult.  A very fine miniature of this material.  $380









OKM-832      Fluorite     England.  Location is undetermined.  Ex. Harold L. Dibble collection.  A fluorite twin on mixed minerals including smaller fluorites, pyrite, dolomite and calcite.  5.6 x 4.3 x 2.5 cm.  Backside is well crystallized with small clearer fluorite.  The only damage I can find on either side is a tiny 1 millimeter cleave on one cube in the twinned grouping.  Very high luster, aesthetic, and mounted in a miniature sized perky box.  $95









OKM-833    Lorenzenite with Aegerine     near Hibini, Kola Peninsula, Murmonsk Oblast, Russia.  Ex. Harold L. Dibble collection.  A very rare species only known in decent crystals from a couple locations.  This is an extremely fine "floater" with one termination showing a small area of matrix contact (so, not really a floater).  It measures 3.8 x 2 x 1 cm and has numerous, acicular aegerine crystals on one termination and along one edge.  No damage.  Very nice luster for the species and text book form.  A rare Russian treasure!   $400









OKM-834      Hubnerite and Quartz     Pasto Bueno, Ancash Dept., Peru.  Ex. Harold L. Dibble collection.  A beautiful, large complex piece with zero damage and fine aesthetics from any direction.  This is a rare floater with no points of attachment, no contacts or blemished of any type.  8.5 x 3.5 x 2 cm.  The quartz is well placed and really adds to an already fantastic mineral specimen.  Nice luster.... great piece!  $800









OKM-835      Hubnerite and Quartz     Pasto Bueno, Ancash Dept., Peru.  Ex. Harold L. Dibble collection.  This example is a single crystal with crude terminations and shows a moderate amount of red color and translucence.  6.2 x 5.5 x 2.3 cm.  Damage to some of the quartz and a cleave along one edge of the hubnerite.  Still an attractive example of the material.  $220




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