Bediasites!!!

Page fully updated 27 November 2012

The North American tektites (Bediasites and Georgiaites) are by far the oldest well-preserved tektites known in the world. They were produced by a 34 million year impact in Chesapeake Bay. After a flight of some 1300 miles, the Bediasites came to rest in Eocene sediments. Along the outcrop trend of this host formation, the tektites have been slowly released by erosion. As a result of this two-cycle history, most specimens are quite abraded. Average quality Bediasites have very little or no primary skin preservation. Others are deeply grooved and furrowed like Rizalites or deeply etched like Moldavites. But above all, they are rare!

Finding them is not a simple matter of wandering about on hundreds of thousands of square miles of prospective surface area (as is the case, for example, with Australites). With Bediasites, the original ground surface upon which the tektites were sparsely and unevenly scattered, was deeply buried, lithified, then tipped on edge and exposed by erosion. Much of the erosionally-derived material was washed away or buried under younger sediments. In a narrow central Texas belt, a few tektites have beaten the odds and both reached the present ground surface and remained there to be discovered.

Most of our inventory was collected over a lifetime by a Texas roads department worker, who spent much of his career in the prime Bediasite hunting grounds in and around Grimes County. He kept a sharp eye on the gravels being excavated and spread during road construction, and assembled a fine collection from this effort. The Tektite Source is proud to be able to offer such a fine selection of these extremely rare specimens.


All of the small images in the following table are linked to larger versions. Click on the thumbnail to view the larger image in a new window, then close that window to return to this page.

The table is arranged by gram weight, from largest to smallest, not by quality. You'll find great specimens and study-grade specimens intermixed throughout the size range. Base pricing is at $5/gm, adjusted upwards or downwards based on quality and special characteristics. You can work out my general appraisal of a specimen by calculating the $/gm reflected in the asking price. $5/gm reflects "average" character. Prices under $5/gm suggest terrestrial damage or other negative attributes. Prices over $5/gm indicate exceptional quality or character.

SOLD items updated 7/26/2016;

52.6 gms #Bedias_0526; $650 Sold Arguably the best Bediasite specimen we've ever offered. This one is huge,essentially flawless, and beautifully ornamented with grooves, pits, and navels. The skin is quite glossy and shows very little evidence of abrasion---exceedingly rare for Bediasites. This is a flattened biscuit-shape highly reminiscent of Rizalites..
50.9 gms #Bedias_0509; $150 Another monster, but this one shows evidence of a hard life. It retains a couple of nice navels, but most of the surface is clearly remodeled by secondary abrasion. There is also a large recent chip exposing the glassy interior. Sold
40.4 gms #Bedias_0404; $500 Here's a museum-piece in the "as good as it gets" category. An oblate spheroid with flawless glossy skin well appointed with superb navels and grooves. No sign of terrestrial abrasion or chips. A stunning world-class piece!Sold
40.1 gms #Bedias_0401; $500 SOLD Another super-quality piece. The upwards projection visible in the photo is a remnant of a percussion cone, precursor to a navel, many of which are present at varying stages of development all over this specimen. This is somewhat like the "indicator cores" seen in Australites which bear clear and silent testimony to their mode of formation. Navels are well known in Philippine tektites, but uncommon elsewhere. There has always been some debate about their origin, but most tektitologists (new word for the day!) believe them to result from terrestrial etching of percussion cones. This specimen gives very strong support to that argument. Quite an important specimen. Glossy skin, no recent abrasion or chips.
37.5 gms #Bedias_0375; $125SOLD Here is a very large example of what Bediasites are commonly like. This one is highly abraded, a common consequence of the erosional liberation of Bediasites from their lithified host horizon. There are some remnant navel grooves, and interestingly, when inspected with a strong light wet, you can see a golden yellow internal reflector, probably a bubble. Bediasites this big are maybe one in a hundred.
37.3 gms #Bedias_0373; $200 Abraded quite smooth, this monster is none-the-less moderately glossy, suggesting that the erosional rounding happened sufficiently long ago that soil acids have had time to reform a secondary skin. The prismatic shape suggests that this is a fragment of a primary stone two to three times this size.
33.3 gms #Bedias_0333; $275 A fine big football-shaped (---that's an American gridiron football for those of you elsewhere in the world---) specimen with moderately glossy skin and some decent remnant navels. Still exceptionally large as Bediasites go.
28.8 gms  #Bedias_0288; $135 Looks like it may have started life as a spheroid that split in half.  
24.3 gms #Bedias_0243; $150SOLD A near-spherical example with a patch of v-grooves that like like fingernail impressions. Sub-glossy surface in good condition. Nice piece.
23.3 gms #Bedias_0233; $300 A gorgeously-featured specimen with glossy skin and deep ornamentation. Kind of resembles a dried prune. A fine, big Bediasite.Sold
20.5 gms #Bedias_0205; $110 A nice thick lense form with remnant navels and erosional abrasion typical of most Bediasites.Sold
19.7 gms #Bedias_0197; $200 Here's a weirdo! Think Australite indicator core and you'll have the correct concept. This shows some remnant patches of skin on a surface that has exfoliated thin skin flakes. The reverse side shows peculiar concentric ridges something like fingerprints. This may actually BE an ablation core (I know of one flanged button Bediasite, so there is a case for atmospheric ablation in Bediasites). If it is a core---and even more significant, an indicator core, this is an important specimen.Sold
18.9 gms #Bedias_0189; $100; high quality skin and "sawcut" ornamentation.Sold
18.7 gms #Bedias_0187; $105; A study in navels, which are quite clearly seen to be percussion cones in this specimen.Sold
17.5 gms #Bedias_0175; $125; gloriously grooved, reminiscent of rizalite grooving!Sold
16.1 gms #Bedias_0161; $80; Interesting tiny hemispheric pitting and a couple of bubble pits. Price reduced due to several small glassy chips.
15.8 gms #Bedias_0158; $90; A high-quality piece with nice "sawcut" ornamentation one one face.Sold
15.6 gms #Bedias_0156; $90; Unusual shallow swirling bands, maybe etching out internal flow-banding?
 13.5 gms. Nearly spherical with some remnant grooving. #Bedias_0135; $70 Most of the highlands on this specimen have been erosionally abraded, but remnants of the deepest parts of the primary ornamentation are preserved.  
12.8 gms #Bedias_0128; $55SOLD; Elliptical pellet, some moderate terrestrial abrasion.
12.7 gms #Bedias_0127; $50;SOLD quite prismatic. Several surfaces are ancient conchoidal fractures with incipient pitting; one surface (shown) is deeply grooved. There are a couple of small glassy chips.
11.8 gms #Bedias_0118; $80SOLD; a great losenge-shaped piece with ring-grooves and a nice navel. Textured all over.
11.5 gms #Bedias_0115a; $55;SOLD  shiny specimen with a partial navel.
 11.5 gms. Erosionally rounded with trace remnants of deepest grooves. #Bedias_0115b; $20SOLD 
11.0 gms , erosionall rounded with moderate remnants of deepest ornamentation.  #Bedias_0110; $25SOLD
10.6 gms #Bedias_0106; $78; An exceptional, deeply-ornamented beauty.Sold
10.1 gms #Bedias_0101; $55SOLD; a rounded pellet with a nice navel and ancient abrasion bearing witness to erosional recycling from its fall-horizon.
 9.8 gms. High degree of erosional smoothing and rounding.  #Bedias_0098; $20 Pleasing little stone, but no primary surfaces remain. Such specimens still have educational value though, because no other tektites require erosional liberation from solid rock.
8.5 gms #Bedias_0085; $50; Very high-quality spherical specimen Sold
8.0 gms #Bedias_0080; $50; losenge with some great navels!Sold
7.9 gms #Bedias_0079; $47; Appearance of an offset is an illusion, but the weird geometry is real.
7.8 gms #Bedias_0078a; $45; very nice overall texture.
7.8 gms #Bedias_0078b; $40SOLD; superb piece. One small glassy chip
 7.6 gms. Abraded surface, but still subangular and quite glossy.  #Bedias_0076; $20 A decent low-cost Bediasite.
7.2 gms #Bedias_0072; $38 Fine glossy losenge free of terrestrial dings.
 7.1 gms. #Bedias_0071; $45 This example is cryptic. It has a kind of fire-polished look, with islands of original skin and glossy patches with delicate concentric rings. I'm at a loss.  
6.8 gms #Bedias_0068; $40SOLD; great ornamentation
6.7 gms #Bedias_0067; $45; great navels giving quite convincing evidence of origin associated with conical impact fracturing.
6.5 gms #Bedias_0065a; $35SOLD Quality little pellet.
 6.5 gms. Another exceptionally translucent specimen #Bedias_0065b; $15 Kind of a beater, all abraded. But it is sufficiently thin to reveal Bediasite coloration well with backlighting.
 6.5 gms. Nice small specimen #Bedias_0065c; $25 Though not deeply ornamented, this one is in good shape and nicely featured overall.  
 6.4 gms. Average  #Bedias_0064; $20 A decent piece witha couple of matte-finish conchoidal surfaces. Otherwise nice skin.
6.3 gms #Bedias_0063; $35; Superb, high-quality specimen with all-over ornamentation and no chipsSold
6.2 gms #Bedias_0062; $45; Exceptional flawless piece with beautiful ornamentation.Sold
6.0 gms #Bedias_0060; $45; Nice bubble-shard, quite rare amongst the bediasite clan.Sold
5.6 gms #Bedias_0056a; $35SOLD; very nice little specimen with great over-all ornamentation
 5.6 gms. Nice flow banding.  #Bedias_0056b; $25 Very irregular piece with good skin character.
 5.3 gms. dull matte finish #Bedias_053; $13 Fairly non-descript little specimen--the sort of thing I would recommend for destructive analytical work.  
 4.9 gms. hints of concentric banding #Bedias_0049a; $20 A nearly spherical pebble with several flatter facets. The latter show delicate concentric ridges.  
 4.9 gms. Irregular form  #Bedias_0049b; $22 Overall good skin condition with trace flow banding.
4.8 gms #Bedias_0048; $20; nice, no chips
4.2 gms #Bedias_0042; $20SOLD; nice quality little nugget
 3.9 gms. Some decent skin features  #Bedias_0039; $18 A little pebble, but really quite a typical Bediasite in overall character.Sold
3.5 gms #Bedias_0035; $40; Wow! A bediasite hedge-hog! Really superb.Sold
2.8 gms #Bedias_0028; $30; unusual ring groove would lend itself to a wire amulet suspension. Very aesthetic piece!SOLD
2.6 gms #Bedias_0026; $25 Odd one. backside is smooth---maybe an irregular bubble-shard? Deep "sawcut" notch.SOLD
1.4 gms #Bedias_0014a; $18; Gorgeous little hedge-hog!SOLD
1.4 gms #Bedias_0014b; $15 Flattish; could be nice as a jewelry setting.Sold
   Lots of new stock to post  Close this page to return to Tektite Source home page.


TRANSLUCENT BEDIASITES!

A client recently requested images of particularly translucent Bediasites. Since I did the work to prep the images, I thought I'd post them here. All of the first lot sold, so I've gone through our Bediasite stock and found some more.

In the table below, the images show bediasites "candled" with a true white LED flashlight. It's tough to get consistent exposure and focus on these, so please note that I see very little real variation in trasnmitted light color. They are all a greenish molasses color, some more saturated, some less, but the hue is about the same. The brightness of the image partly reflects variations in absolute translucency, but also is related to specimen thickness. The big ones look darker than the small ones mostly due to thickness. I suspect that these pieces would be prime candidates for faceting.

The same specimens are shown all together in the reflected natural light image below the table so you can get a better idea of relative size and outward appearance. Note that the translucency is generally not visible in reflected light. You will only see it with fairly strong backlighting.

The thumbnails below are not "clickable" as the photo quality is pretty crummy and I wouldn't want you to see bigger versions! Sorry. The table is arranged by weight, from biggest to smallest.


5

8.0 gms, $40On hold

6

7.2 gms, $35, a few little frosted dingsSOLD

8

6.6 gms, $32Sold

9

6.2 gms, $31Sold

13

5.6 gms, $30SOLD

15

4.6 gms, $26Sold

18

4.3 gms, $25

19

4.2 gms, $26Sold

23

3.8 gms, $21

24

3.8 gms, $20Sold

27

3.5 gms, $19, some tiny glassy dingsSold

32

2.7 gms, $15SOLD

37

2.3 gms, $15, exceptionally translucent Sold

42

2.1 gms $13SOLD

45

1.8 gms, $10SOLD

47

1.8 gms $10Sold

Here are the same specimens seen in the table above, but here they are shown in reflected light with a scale bar so you can get an idea of relative sizes and surface characteristics. See table above for availability status.





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Sorry, ALL of the following translucent pieces are sold. I'm just leaving this image up so you can see more examples of backlit translucent Bediasites.

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