Archive for November, 2015

The Glorious Vivid Colours of Felsenschlag – New Specimens

Felsenschlag 44Felsenschlag is one location I just cannot resist.  These days I am fussy, but still, every so often I am lucky enough to add a few more to … well, it was a dedicated shelf once, now it’s more like a ‘pile’.  The warm and vivid colours of the agate here can be world-class – unquestionably one of the greatest thundereggs of any continent.

Felsenschlag 41 I have just uploaded a major update to the gallery of these stones – sixteen specimens.  And here on the blog is a chance to wallow in the best of them.  Enjoy!


Felsenschlag 31Felsenschlag 43Felsenschlag 40Felsenschlag 35Felsenschlag 38Felsenschlag 33Felsenschlag 32

More German Locations

The endless parade of new German thunderegg locations still shows no sign of stopping – and they are every bit as confusing as ever with uncatalogued location clusters, things turning up in rivers, new discoveries and old ones …

Here’s a run-down  of new locations on the gallery, beginning with Saxony.



This is a Minkwitz egg.  The gallery has presented the vein agate form from this location for a while – here though is the other, nodule form.

And onwards into the heart of the t-egg storm – Thuringia:


All this time, I regarded Spießberg as a ‘location’ – but no, that would be too easy.  Apparently there are many locations around there, of which the classic white agate specimens are just one.  This is another – though who knows which bed it’s from!



Another from the Spießberg area – more specifically from the Rennsteig hiking trail.  A new find and one of the most beautiful new things to come out of Germany in a while.



This is a Körnberg thunderegg – from “a higher mountain behind Gottlob”.  Not to be confused with Kornberg and Komberg eggs of course …



An incomplete Lippers specimen with a very interesting plated core.


This is Manebach – a location that is very hard to get out without breaking them. 


And lastly, this is a Kniebreche thunderegg, which also solves an old unknown mystery that’s been on the gallery for a while …

So there you have it.  The Germany page is getting so large i might have to split it up at this rate – and also should find some more sensible way to organise it all.  But that’s for the future.  In the meantime, I have no doubt the locations will keep coming!



More Kaolin Ghosts – Colourful Querbitzsch


Rather quicker than I thought, here is the update to the Querbitzsch gallery that I promised.  These new specimens reveal some of the lush and complex colour that this location is capable of, ranging from green ‘jasper’ to red mineralisation.  These are a deeply unusual and beautiful location, very much worthy of the collector’s attention.


New New Mexico – the Sequel

Following on from previous updates, the long and thankless task of cataloguing the endless beautiful but almost indistinguishable New Mexico Browns continues!  Three more new locations have been launched.

Rockhound State Park is a location that has been on the gallery for a while in the form of a donated images, but now I have added two specimens of my own, including a larger one.  These reveal the complexity of the location – a seeming susceptibility to intrusions and punched in caps.


Rockhound State Park Thunderegg

The Los Cruces bed is a new one on me.  All I have to go on is this one specimen, but the presence of something edging towards cloud agate is a distinguishing feature here.


Los Cruces Thunderegg

And lastly, Fish Hook.  The specimens I have seen of these are very fine indeed – large and grand thundereggs (and way outside my budget at the moment!).  Here’s a nice one though, with brecciation and quartz.


Fish Hook Thundereg

I have no doubt there are many many more of these New Mexico Browns out there – all meeting that maddening description “more difference within the beds than between them”.  I look forward to finding more!



The White Ghosts of the Kaolin Pits

The German kaolin mines produce a group of thundereggs that are not quite like anything else out there.  They are clearly from the same geology, yet showing some distinct differences as well. They are characterised by an extremely weathered and crumbly matrix that is heading for white. Often incomplete or damaged, they can still be extraordinarily beautiful. The two commonest locations (as far as any of these are common), are Gröppendorf and Querbitzsch, but there are others out there.  I have a Kemmlitz stone on its way to me as well, which is only more weathered and more ghostly. I will publish that later on.

Gröppendorf Thunderegg

Gröppendorf Thunderegg

Gröppendorf specimens are more prone to solid agate than the others (that I have seen), especially a really striking white that can stand alongside any thunderegg in the world.

Querbitzsch Thunderegg

Querbitzsch Thunderegg

The Querbitzsch specimens, by contrast, are often crystalline with inclusions and the agate reduced to thin bands, if it is there at all. They can also be quite colourful with green or bright red mineralisation. I have more of these on the way or as yet unpolished, so keep an eye out for some of these more colourful specimens in the future.

Groppendorf Thunderegg

Groppendorf Thunderegg

The kaolin egg deposits in this geological area are also one of the sources of the Saxony gravelpits, especially Bokelwitz and Otterwisch.

Querbitzsch Thunderegg

Querbitzsch Thunderegg

Click here for the Germany gallery:

New New Mexico

A selection of new locations and new specimens from New Mexico have been uploaded to the gallery now – a welcom tidy up of that particular page.

South Canyon - IIRC, this is a fairly general location that includes Blue Sky - but not only that and this specimen comes with a tag of nearby. The same classic New mexico Brown though.

South Canyon – IIRC, this is a fairly general location that includes Blue Sky – but not only that and this specimen comes with a tag of nearby. The same classic New mexico Brown though.

An Agate Canyon specimen. This was a float egg and it is safe to say that i know nothing at all about this location.

An Agate Canyon specimen. This was a float egg and it is safe to say that i know nothing at all about this location.

A First Gate thunderegg showing some nice flowbanding.

A First Gate thunderegg showing some nice flowbanding.