Saturday, April 6, 2019

Apatite




Apatite
This sample comes to us from rough rocks we had around the house.  They are not identified and that is difficult for me.  This is the second one I have tried.

Apatite
This is apatite AKA hydroxylapatite, fluorapatite, and chlorapatite.  The mineral was named by the German geologist Abraham Gottlob Werner in 1786.

Apatite
I compared its color to a sample which has been identified.

Apatite is often mistaken for other minerals.  Defining mineral for "5" on the Mohs scale.  Major component of tooth enamel and bone mineral.  Used in manufacture of fertilizer.

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Wednesday, April 3, 2019

Getting Started II




Camera Setup with Stackshot
The use of microscope objectives precludes the use of Camranger which uses the auto focus function of the lens.  It also means you have no f/stop control.  I shifted to using Stackshot to collect my image stacks.




The mounting of microscope objectives in front of a lens and mounting a non-Canon mount lens to a Canon Camera requires MANY adapter rings.  I soon or maybe not so soon learned that there is no camera store which stocks many if any of these.  Ebay is the probably the place there most of the rings are for sale.

Problem solved, right?  Wrong. The sellers if these adaptor rings on the site are mostly out of country.  Shipping involves customs and slow boats.  Buy in country where ever possible even if the cost is slightly higher.  The hidden cost of the rings from out of country is expedited shipping.  It could cut down your wait time to a week.  I waited two or more months for my first ones.

Just any objective, lens and camera combination usually does not give the quality I desired.  We'll talk about that another time. 

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Sunday, March 31, 2019

Adamite




Adamite
Zinc arsenate hydroxide mineral, Zn2AsO4OH. In its pure state it is colorless.  It displays other colors based on impurities: Yellow,Fe; green, copper.  Named after French Mineralogist Gilbert-Joseph Adam (1795-1881).  The type locality is Chañarcillo, Copiapó Province, and Atacama Region, Chile.


Adamite
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