Goldberg Coins and Collectibles



Sale 118

The Nov 14-15, 2020 Collectibles Auction


Meteorites
 
 
Lot Photo Description Realized
Lot 776
Large 170 Gram Section of a Seymchan Pallasite. Two meteorites weighing 323 Kg were found in 1967 in Seymchan, a Magadan district in far eastern Russia. Originally, Seymchan was believed to be just an iron-nickel meteorite, but recently olivine crystals were found in parts of some of the Seymchan meteorites, which makes it a far rarer Pallasite. Pallasites are literally gemstones from outer space containing olivine crystals mixed in with the iron-nickel matrix. This large 4.5 x 4.1 inch 170.2 gram slice has more than 50% olivine crystals and silicate inclusions in its iron-nickel matrix and has been polished to reveal this interesting interior, including many translucent olivine crystals. The silicate inclusions are found in a type of stony iron meteorite known as a Mesosiderite. Consequently, this Seymchan section is a mix between a Pallasite and a Mesosiderite. The olivine crystals in Seymchan are smaller in diameter than in most Pallasites. Seymchan slices are remarkably stable. Comes in an 8 x 6 inch Riker Mount for presentation. Estimated Value $1,000 - UP
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Lot 777
Meteorite Etched Gibeon Slice. Gibeon iron-nickel meteorites are in very high demand as they are hard to find and possess the most beautiful internal crystalline structure when cut and etched. Gibeon meteorites were found in the Kalahari desert of Namibia, Africa from a fall that occurred thousands of years ago. This large 5.25 x 4 x .4 inch, 1002 gram (over 2.2 pounds) section has an extremely detailed, beautiful octahedral Widmanstatten pattern. This interesting geometric pattern resulted from the separation of two alloys of nickel, taenite and kamicite that occurred on the large parent asteroid before it was blown apart early in the formation of the solar system. This crystalline pattern does not exist on any rocks on earth and only forms when the iron core of the asteroid cools very slowly at no more than one degree Celsius per million years. This slice is from an old collection and has the original fusion crust on top. It is protected in a 8 x 6 inch Riker mount. Estimated Value $900 - UP
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Lot 778
Meteorite 520 Gram Sikote-Alin With Flow Lines. This large 520 gram 2¾ x 2½ x 1½" Sikhote-Alin Iron-Nickel meteorites is a splendid and most interesting example of a shrapnel type Sikhote-Alin meteorite. It shows many features of the huge explosion that took place on Feb. 10, 1947 high above the Sikhote-Alin mountains of Siberia. The enormous explosion tore the meteorite into thousands of smaller pieces and knocked people off their feet several miles away from the blast. This distinctive meteorite shows signs of the explosive shearing force with sharp edges, metal flowing over the edges and many of the delicate flow lines that occurred when the Iron-Nickel surface melted from the intense heat of passing through the earth's atmosphere. Displayed on a magnetic stand. Estimated Value $900 - UP
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Realized
$600
Lot 779
Rare 101 Gram Slice of a Silicated NWA 5549 Iron-Nickel Meteorite. All silicated Iron-Nickel meteorites are very rare and important because they match up with oxygen isotopes with the also-rare primitive achondrites like Winonaite. Most stony meteorites are chondrites, meaning that they have round chondrites in their make up. Achondrites lose most of their original chondrites because of metamorphism and partial melting. This sizeable 101.4 grams 2 x 1¾ inch partial slice of NWA 5549 found in Algeria in 2008 has been polished and etched showing many silicate inclusions in the iron-nickel fields. The silicate inclusions are chondritic in chemical composition but being recrystallized makes them an achondrite. Matching up with Winonaite means that the IAB NWA 5549 originated from the same parent body. Winonaites came from closer to the surface and NWA 5549 from deeper in the core of the yet-to-be discovered planetesimal body. Estimated Value $800 - UP
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Unsold
Lot 780
  Withdrawn Unsold
Lot 781
  Withdrawn Unsold
Lot 782
Gem Quality 495 Gram Stony Meteorite. This gem quality 4 x 2½ x 2", 495 gram (over one pound) was found in the Sahara desert and is designated as an NWA meteorite. It is magnetic like all stony meteorites that do not come from a planet and is probably an ordinary chondrite meteorite with chondrules. Chondrules are mostly round bits of material that cooled and joined together to form the asteroids and planets when the solar system was formed. What makes this specimen special is it being completely covered in its original fusion crust with a one inch window cut on one edge that show the dark brown interior of the meteorite with flecks of iron which is definitive of most ordinary chondrite meteorites. Fresh. Estimated Value $400 - UP
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Realized
$300






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