August 2016 Update, Page 2

The Last of the Really Good Exogenic Fulgurites...

 

 

 This is one of the exogenic fulgurites to appear in the Rocks and Minerals ariticle, 2011.    This is the other exogenic fulgurite to appear in the Rocks and Minerals ariticle, 2011.

        

         The strike which produced all of these fulgurite specimens occurred on August 2nd, 2008.  The strike occurred at 432739.65 N latitude by 76302.22 W longitude between the roadway and sidewalk on 100 East Cayuga Street at an elevation of 88.4 meters above sea level.  This is approximately six city blocks from the southeastern edge of Lake Ontario.  The site was composed of four distinct impact spots.  The entire strike site was approximately five meters in length and two meters in width.  A paper documenting the occurrence and describing its scientific significance has been published in Rocks and Minerals magazine, May/ June 2011 issue, vol. 86, no.3, p. 264-270.

The Oswego, New York, exogenic fulgurite occurrence represents only the second occurrence of these unusual fulgurites to be documented, the first being the Elko, Nevada, occurrence, found in 1997 (Mohling, J. W. 2004. Exogenic fulgurites from Elko County, Nevada: A new class of fulgurites associated with large soil-gravel fulgurite tubes.  Rocks & Minerals LXXIX: 334-40).  Many similarities between the strikes exist, but it is the differences that are of interest.  Further, this strike was found and excavated only days after its discovery vs. years after its discovery which seems to be the case in the Elko example.  

Exogenic fulgurites of all forms and combinations of forms were present on the surface of the ground surrounding the impact points of the lightning.  They extended outward for an estimated radius of no more than a meter.  Filaments with and without attached droplets were found to 13 cm in length.  Individual and small groupings of this form were some of the most aesthetic specimens recovered from the find.  A few of these were larger aggregates.  Spinose and flagellated varieties of droplets, were relatively common as were small droplets that were roughly spherical.  The droplets were mostly green in color and ranged in size from 1 mm to 3.5 cm.  About a third of these specimens are completely hollow, with no external openings, and they float in water.  Microscopic investigation showed that even the smallest droplets and spheres to be highly vesicular having between 20 and 70 percent open space.  Less common were clusters of these droplets or clusters connected by filaments.  Drapery like forms or sheets of material were also found beside, and attached to, ground fulgurites.

The surfaces of the exogenic fulgurites vary in texture.  Those that appear to have solidified in the air have smooth, lustrous surfaces on all sides.  Most, however, appear to have only been partially solidified upon their impact with the ground, with one side being smooth and lustrous and the opposing side having a texture reflecting the soil surface, sometimes with small bits of soil attached.  The assemblage of colors in order of decreasing frequency of occurrence are: (1) green; (2) gray to black; (3) white; (4) silver; and (5) brown. 

        The specimens to follow represent a good selection of the best materials recovered.  All the exogenic materials are glassy in appearance (very lustrous) and have smooth surfaces from their quick cooling and flight through the air.  Many Ground Fulgurites were also recovered.

 

 

FONY-100

FONY-100   Exogenic Fulgurite   Oswego, Oswego County, New York.  From lighting strike on August 2, 2008, ref. Rocks and Minerals magazine, May/ June 2011 issue, vol. 86, no.3, p. 264-270.  Collected by Joeseph, Jonah, Arlo, and Jeffery Shallit.  A 7.2 cm long, thin filament with one 1 cm extension on one end.  Interesting swan or dragon like shape.  Lustrous and with no soil attachments so it must have solidified entirely while in flight above the impact site.  No damage.  Fantastic example of this rare material.  $100

 

 

 

 

 

FONY-101

FONY-101   Exogenic Fulgurite   Oswego, Oswego County, New York.  From lighting strike on August 2, 2008, ref. Rocks and Minerals magazine, May/ June 2011 issue, vol. 86, no.3, p. 264-270.  Collected by Joeseph, Jonah, Arlo, and Jeffery Shallit.  A 6. 7 cm specimen with great luster and minor filament attached mid-body.  Lustrous and with only minor soil attachments on one side so it must have solidified almost entirely while in flight above the impact site.  No damage.  Interesting example of this rare material.  $160

 

 

 

 

 

 

FONY-102

FONY-102   Exogenic Fulgurite   Oswego, Oswego County, New York.  From lighting strike on August 2, 2008, ref. Rocks and Minerals magazine, May/ June 2011 issue, vol. 86, no.3, p. 264-270.  Collected by Joeseph, Jonah, Arlo, and Jeffery Shallit.  A 4 x 3 x 1.7 cm specimen composed of balls (probably hollow) with secondary droplet attachments and short filaments.  Lustrous and with one side showing light soil adhesions indicating it landed on that side while still slightly molten.  No damage but the filaments are not terminated.  Fantastic example of this rare material.  Very complex and interesting.   $250

 

 

 

 

 

FONY-103

Bottom

FONY-103   Exogenic Fulgurite   Oswego, Oswego County, New York.  From lighting strike on August 2, 2008, ref. Rocks and Minerals magazine, May/ June 2011 issue, vol. 86, no.3, p. 264-270.  Collected by Joeseph, Jonah, Arlo, and Jeffery Shallit.  A 5 x 2.5 x 1.6cm specimen composed of balls (visibly hollow due to a natural opening on its upper surface) with secondary droplet attachments and short filaments.  Lustrous and with one side showing moderate soil adhesions indicating it landed on that side while still molten.  No damage but the filaments are not terminated.  Small flat pebble is attached to underside.  Fantastic example of this rare material.  Very complex and interesting.   $240

 

 

 

 

 

 

FONY-104

FONY-104   Exogenic Fulgurite   Oswego, Oswego County, New York.  From lighting strike on August 2, 2008, ref. Rocks and Minerals magazine, May/ June 2011 issue, vol. 86, no.3, p. 264-270.  Collected by Joeseph, Jonah, Arlo, and Jeffery Shallit.  A 5.6 cm filament with droplets to .4 cm attached.  One end is not terminated.  Lustrous and with one side showing light soil adhesions indicating it landed on that side while still slightly molten.  No damage but, again, one filament is not terminated.  Nice example of this rare material.  Attractive example.  $90

 

 

 

 

 

FONY-105

FONY-105   Exogenic Fulgurite   Oswego, Oswego County, New York.  From lighting strike on August 2, 2008, ref. Rocks and Minerals magazine, May/ June 2011 issue, vol. 86, no.3, p. 264-270.  Collected by Joeseph, Jonah, Arlo, and Jeffery Shallit.  A 4.5 cm specimen composed of bulges (probably hollow) with secondary droplet attachments and several short filaments.  No soil adhesions, lustrous all around, indicating it solidified entirely in the air.  No damage.  Fantastic example of this rare material.  Very complex and interesting.   $125

 

 

 

 

 

 

FONY-106

FONY-106    Exogenic Fulgurite   Oswego, Oswego County, New York.  From lighting strike on August 2, 2008, ref. Rocks and Minerals magazine, May/ June 2011 issue, vol. 86, no.3, p. 264-270.  Collected by Joeseph, Jonah, Arlo, and Jeffery Shallit.  An 11 x 11 x 4.5 cm specimen of very complex composition.  This piece is from the rim of the primary evulsion crater.  It is shaped like a wave of water cresting near a beach.  One side (the outside) shows soil contacts while the inside is relatively smooth.  Lots of interesting structures including balls to almost a cm each, filaments too numerous to count, tadpole like forms, as well as others.  This is one of the more important pieces created at this important occurrence.  Edge contacts from the rest of the evulsion crater and filaments that are incomplete, as would be expected.  Fantastic example of this rare material.  Very large, complex and interesting.  A real conversation piece!   $950

 

 

 

 

 

FONY-108

FONY-108    Exogenic Fulgurite   Oswego, Oswego County, New York.  From lighting strike on August 2, 2008, ref. Rocks and Minerals magazine, May/ June 2011 issue, vol. 86, no.3, p. 264-270.  Collected by Joeseph, Jonah, Arlo, and Jeffery Shallit.  An 7.6 x 3.5 x 2.2 cm specimen of very complex composition.  Both sides show moderate soil contacts.  One end was in contact or broken off of other material.  Balls to a cm attached in numerous places, various colors.  Body of piece is hollow in areas.  Nice example.   $225

 

 

 

 

 

FONY-109

FONY-109    Exogenic Fulgurite   Oswego, Oswego County, New York.  From lighting strike on August 2, 2008, ref. Rocks and Minerals magazine, May/ June 2011 issue, vol. 86, no.3, p. 264-270.  Collected by Joeseph, Jonah, Arlo, and Jeffery Shallit.  A 5.3 x 2.2 x 2 cm specimen that is totally unique for the find.  This specimen partially solidified in the air then landed on a cable that supported the power pole that was partially struck by the lightning!  You can see where it draped over the cable and dripped down like an icicle and even make out the groves from the cable!  Lustrous on all sides, one tiny white droplet attached and one edge contact with no damage to the body of the piece or its termination.  Again, no others were found having hung from any of the things in the vicinity of this strike.  Unique.  $250

 

 

 

 

 

FONY-110

FONY-110    Exogenic Fulgurite   Oswego, Oswego County, New York.  From lighting strike on August 2, 2008, ref. Rocks and Minerals magazine, May/ June 2011 issue, vol. 86, no.3, p. 264-270.  Collected by Joeseph, Jonah, Arlo, and Jeffery Shallit.  A 3.5 x 2.5 x 1.5 cm example composed primarily of a large green ball with thick attached stringer.  Ends of stringer are broken off but no other issues with the surface of this lustrous and colorful example.  Various colors make this a less common variety.  $120

 

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