Tag: jasper

Metallic Mystery Agate

Metallic Mystery Agate

This agate formed in association with a yellow jasper (which is predominantly comprised of silica). Before I cut this Carver find, it displayed a curious metallic sheen which was in fact what initially drew my attention to it.  The sheen was very different from the sheen observed from other quartz and jasper materials.  This metallic sheen appears quite clearly on the bottom of the pictured cabochon. The rounded surface of the cabochon shows agatization and two visible “vugs.”  The stone from which this cab was cut also had a curious and unexpected heft (weight) that, combined with the metallic sheen, suggested a metallic component had mixed with jasper and formed  a metallic mystery agate that had not been previously observed on The Carver agate field. If I can find out what metal is involved I will update you.  

New from the Carver Agate Field: Is It Jasper? Agate? Jasp-Agate?

New from the Carver Agate Field: Is It Jasper? Agate? Jasp-Agate?

These definitions will help us decide! Jasper:  opaque (light does not penetrate); any color of chalcedony which is a micro-crystalline (requires magnification for crystals to be seen) form of quartz. Agate:  a banded translucent (lets light through) chalcedony of any color, most often found in nodules, geodes, or cracks in silicaceous volcanic rocks. Jasp-agate:  a chalcedony with characteristics of both agate and jasper.  The basic component is silica (quartz) which may be either micro or macro crystalline (crystals can be seen without magnification).  It can be opaque, transparent or translucent (sometimes all three appear in the same specimen).  It can be banded like an agate or it can be like a jasper with agate structures which form within cracks or fractures or vugs (small cave-like voids) in jasper. If you would like to see some of the Carver Agate Field jaspers and jasp-agates, take a look at the new JASP-AGATE […]

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Rare Large Jasper Nodule from the Carver Agate Field

Rare Large Jasper Nodule from the Carver Agate Field

This posting is more about geology than a pretty specimen. Bear with me as I ‘get into the weeds’ to explain why this is rare and is the subject of this posting. How nodules form Gas bubbles in molten lava sometimes, after hardening, leave a bubble or void in the hardened lava which may fill with a silica solution. The silica often creates banded agates or crystal lined voids in the center of the nodule which are called geodes. What is rare and unusual in this large specimen, is that the nodule formed in the gas bubble is essentially jasper, not agate, quartz, or other crystals.  While The Carver agate field has lots of jaspers, they are almost always formed separate from, and outside of, gas bubbles that have formed in the lava. The process by which jasper would completely fill a large gas bubble is apparently uncommon. I have […]

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Brecciated Jasp/Agate from The Carver Agate Field

Brecciated Jasp/Agate from The Carver Agate Field

The Carver has produced red and yellow jaspers, sometimes mixed with green.   Yellow and red are seen in this photo.  After the jasper had initially formed, volcanic forces cracked/fractured the jasper into angular shards. Eventually a silica solution in either a liquid or semi-liquid state filled the fractured shards and then hardened, cementing the jasper back together.  These shards that are cemented back together are called brecciated.  Since some of the silica filling in the areas between the shards took on a banding (see particularly the upper left corner of the stone), we see a fortification agate which has formed within the brecciated jasper. For this reason, this specimen can be described as jasp/agate (part jasper, part agate) which is brecciated.

Designer Free Form Gem Stones from ‘The Carver’ Agate Field now for sale at Texas Amethyst Agate Shop

Designer Free Form Gem Stones from ‘The Carver’ Agate Field now for sale at Texas Amethyst Agate Shop

This is the Carver agate field jasper “Grotto.” This jasper has beautiful coloration and pattern and more. It has a totally unique and unexpected crystal-filled grotto which is shown enlarged in the photo above. Be sure to visit the Shop to see the designer gem stones now available for sale!

5 NEW Diversity Galleries for 2019

5 NEW Diversity Galleries for 2019

Wow! Three months collecting rocks on ‘The Carver’ in the fall of 2018 and January 2019 has yielded amazingly varied and beautiful geodes, agates, and jaspers. I have selected 108 specimens that I believe show the extraordinary variability of color, banding, and sagenitic inclusions (those neat weird shape things you can see hidden in each rock specimen). There are 5 galleries in this set 2019 Diversity Gallery #1 2019 Diversity Gallery #2 2019 Diversity Gallery #3 2019 Diversity Gallery #4 2019 Diversity Gallery #5 If you have questions or comments about any specimen, I would like to hear from you. ‘The Carver’ agate field is all about geological diversity.  I hope you enjoy viewing these new galleries.  

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NEW Bracelet!

New bracelet made by me, September 2017. A great example of red and yellow agatized jasper from ‘the Carver’.  I can no longer offer this for sale as it is gone already!  No wonder….. it is a very special stone. I will add this bracelet to my bracelet gallery so others can enjoy it, too.

Three Amigos April Rock Hunt

Three Amigos April Rock Hunt

Two days of rocking turned up several kinds of moss agates (red, green and yellow), jasper,  agatized jasper, and brechiated jasper (yellow, orange, red, green….), plus nodules and agates.   Geologist Bill continued to ‘school’ us on the geology of ‘the Carver’.  A great time was had by all. Click on the images below to see the detailed versions. Left to right:  John Carver, Raymond Boswell, Bill Halepeska, on April rock hunt on ‘the Carver’.