Thursday, November 17, 2011

Agate Close Up Photos

Yesterday I was busy making mineral art for the two shows coming up this weekend. Sorry I didn't make time to implement a blog update.  As I have already explained, on Saturday I'll be in East Grand Rapids and on Sunday I'll be at Ottawa County Park north of Holland, MI. More information is available on the home page of

It is cold in Grand Marais. Highs yesterday were in the 30s with up to 30 mph winds. We only received a trace of snow, but today winds have switched to be a little more northwest. Luce county is going to be hit with 5-8 inches of snow. We are on the western end of the lake effect snow, but will receive some.

For today's posting I dipped into the book photos again. I selected pictures from chapter 4 and cropped a few for close ups of agate detail. This is the 3rd or 4th time I've posted close up pictures. Hopefully there are not repeats, but if they are we can enjoy them again.

The first is a close up of the bizarre inclusions in a Priday agate from the Richardson Mine in Oregon.

This picture shows a close up of botryoidal and moss agate formation in a New Mexico agate.

This is one of my favorite Grand Marais Lake Superior agates.  This specimen is from a collection I purchased in the mid-1990s -- even before I had the museum.  It is a carnelian agates with weird inclusions.  The exterior of this specimen at first look can be mistaken for basalt.  However, it is actually smokey quartz.

This is an usual crazy lace Lake Superior agate.  Here you can see the transition zone between macro and microcrystalline quartz crystals.

This is a close up of Mexican crazy lace agates.

Here is a close up of a dendritic agate.  The dendrites are mineral deposits that form from mineral rich water that seeps into the micro fractures in the agate after the agate originally forms.

This is the outside section of a Brazilian agate.  It shows round spheroid formations that deposited first next to the husk of the agate.  You wonder if these spherical formations were at one time on Lake Superior agates and then eroded off resulting in the common pit-marked surface.

This picture shows a close up of a Lake Superior eye agate.

This is a close up of the book photographer's favorite picture in the book.  Tom Shearer, the photographer, likes this Mexican fire agate.

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