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Thursday, June 9, 2022

Calcite, Marcasite France Stone Co. Quarry Logansport Cass Co. Indiana USA (2006) FOV:4.8 mm

#2766 Calcite, Marcasite France Stone Co. Quarry Logansport Cass Co. Indiana USA (2006) FOV:4.8 mm - Calcite showing double refraction of marcasite blades (not artifacts of focus stacking).

Calcite Var. Coboltocalcite Mashanibo West Mine Kolwesi Shaba Zaire (2002)

Chiavennite, Natrolite Vevja Twedalen Norway (2002) FOV:4.8 mm

Monday, May 30, 2022

Sunday, May 22, 2022

Beudantite, Mimetite, Chalcophanite Richmond Sitting Bull Mine Galena Lawrence Co. South Dakota USA (2000) FOV:1.6 mm

Descloizite, Chalcophanite Richmond Sitting Bull Mine Galena Lawrence Co. South Dakota USA (2005) FOV:1.6 mm

#2730 Descloizite, Chalcophanite Richmond Sitting Bull Mine Galena Lawrence Co. South Dakota USA (2005) FOV:1.6 mm Revisiting one of my favorite specimens I collected by in the mid 1980s. My latest tweak to my technique is better. Now I need to improve my lighting.

Thursday, May 12, 2022

#1883 Silver Batopilas Chihuahua Mexico (2002) FOV:16 mm

Ramsdellite Mistake Mine Yavapai Co. Arizona USA (2002) FOV:7 mm

Semseyite Rodina Romania (2002) FOV:16 mm

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Saturday, January 8, 2022

Lego specimen stage for stereo microscopes

 Lego micro mineral specimen stage 2.0
  •  My second attempt at creating a height adjustable specimen stage that allows finer control of the coarse focus adjustment which  my current microscope stand does not support.
  •  Better stability using steel sheet base attached with magnets
  •  Reduced vibrations while adjusting the stage height up and down
  •  Fewer gears needed to achieve vertical motion 
  •  Allowed me to take 10-20 images manually moved at 40x magnification for focus stacking 
Kudos to:  
LEGO Studio 2.0 is fantastic free software.

 https://www.bricklink.com/v2/main.page

https://www.bricklink.com/v3/studio/download.page

https://www.heliconsoft.com/

https://amscope.com/

#1401 Goethite Var. After Siderite Dan Patch Mine Keystone Pennington Co. South Dakota USA (2000) FOV:1.6 mm/2.5 mm







Colemanite Boron Kern Co. California USA (2006) FOV:4.8 mm

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