Tuesday, January 31, 2012

Thin Ice Series

Thin Ice
This is my newest "Thin Ice" image.  Close examination will reveal leaf like shapes in the ice.  It was a cloudy day.  I used off camera flash near the ground to reveal the texture.

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Monday, January 30, 2012

Steve McKee

Steve McKee
This from the Richland County Park District GNC website:  Steve is our long-time director of the Richland County Park District, and he is just getting warmed up with 30 years experience.  He considers all of the Mohican area his own backyard, and would like to share it with you.  Steve's specialties are botany and birds.

I have known Steve for several years.  I worked with his wife, Debbie in the city schools.  I think that I might have met him through her.  I remember going on nature walks with him and thinking that it would be neat to know a lot about nature.  I am glad for my retirement, a time in which to learn.  Steve is always helpful when I have questions.  Thanks, Steve!

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Sunday, January 29, 2012

Volcano Ejecta II

Volcano Ejecta
Another colorful rock.  This one contains the distorted lines.  It is porous.  The porosity and the color says to me lava.  I have some samples of lava and it sure looks like the same thing to me.  

Volcano Ejecta
What a Hodge-podge of rock!  This must have been formed by high pressure and heat.

Light Box Setup
I use a 20 inch cubic light box.  It creates nice soft light on the subject.  I set a custom white balance.  I like this setup because it is comfortable for me to use.  As I do the macro work on the computer, I can zoom in to the individual pixals, 100%, and see lots of detail in the rock.

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Saturday, January 28, 2012

Volcanic Ejecta

Volcano Ejecta
I was initially drawn to this rock by the folded and distorted lines around the edges.  As I looked at it closer and rotated it in the light I saw that it might be a geode.  The crystals are at the far left in the dark place.  I feel sure that the distortion of the lines was caused my heat and pressure.  The yellowish center may be lava.  That is why I think it was ejected from a volcano

Volcano Ejecta
As I looked closer, I saw the granularity in the "lava."  And my attention was drawn to that dark area with crystals.

Volcano Ejecta
These crystals may not be diamonds but a diamond is one crystal which is ejected from a volcano.

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Friday, January 27, 2012

Diamonds

Diamond  
There, I have said it!  I think these are diamonds.  This is the rock that I showed you yesterday.  It came from a volcano.
I saw "How the Earth was Made"  last night.  It mentioned diamonds as being formed 100 million years ago while the dinosaurs walked the earth.  They discussed a mine in Kimberley, South Africa.  Diamonds are associated with the volcanic rock Kimberlite.  They said that the diamonds were formed 100 miles below the Earth's surface where there is intense heat and pressure.  The volcanic eruption which ejected them was a super eruption.  They are mined in a kimberlite pipe which was the route of the volcano eruption.

As I read about diamonds, I learned that the way to identify them is to use the Mohs scale.  It is a scale of hardness for minerals.  Diamonds are the hardest of all minerals at ten,10.  That means they will scratch any other mineral including corundum which is nine, 9.  I happen to have a test kit which includes samples of the various minerals for testing the hardness of unknown samples.

These are extremely small crystals.  I don't know if I want to remove them and if I did, I doubt that I could hold them to try to scratch corundum.

The diamond is said to have a white streak.  That means it will leave a white stream on unglazed white pottery when scratched across it.  My test kit also includes white pottery.  

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Thursday, January 26, 2012

Breccia with Crystals

Breccia with Crystals
I have been wondering about this rock lately.  I started by looking at the white spot on the far left.  I noticed crystals in it.  Then I rotated the rock to this view and saw more crystals.

Lava Like Rock
I titled this one "Lava Like Rock" because of the granularity of the surrounding base rock.  The granularity along with the color made me think of Lava.  

I decided that the best way to show the crystals was to rotate it in a video.  Some of the sides are not nearly as interesting as these two sides but it gives you a complete idea of this rock.

View the video.  It is at the bottom of the page.


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Wednesday, January 25, 2012

Geode

Geode
I have been photographing deformed rock lately as you have probably noticed.  This one was more interesting because it was also a geode.

Geode
As you will read in days to come, this rock also may be ejecta from a volcano.  It has an interesting mix of crystals and folding.  Both could be caused by lots of heat and forces.

geode
Sometimes I think that the best way to share the rock in its entirety, or nearly so, is to rotate it in a video.  This is one of those.  Take a look at this video.  It is at the bottom of the page.


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