

10x
Cadmium metal 99.9%
Color = accurate except the shiny reflected white and the shadowed areas. There is a hint of blue when examining this metal under the microscope, which I was not able to capture with the CCD microscope camera. Please keep in mind that this ccd microscope camera only functions in 2D, so it is a constant compromising struggle to capture different heights and curved surfaces.
Very little heat applied and abundant colorful sublimates quickly form.
Several photographs of this element are provided because cadmium can be associated with Lead and Zinc and if present could affect the overall sublimate patterns. There is some brown smoke associated with this heated metal and can serve as an additional hint to its presence. I did not detect any specific odor, and even though the fumes were directed away from me there was a peculiar metallic taste in my mouth.

10x
From the above white plaster tablet
Color of non-focused sublimates are not accurate due to lighting and shadows, however the metal button is reasonably accurate.
Flame direction is from right to left.

39x of the same above button, which appears to be hollow, possibly due to heat expansion. There are small hints of red and green covering the entire surface. Very little heat was applied on this button.

Prolonged, but not intense heat was directed on another tablet that held a different piece of cadmium metal demonstrating the volatility of cadmium. The black is a sublimate.

Blackened plaster of Paris tablet.

10x of metal button on the blackened tablet.
Colors very close to accurate, excepting the bright reflected light.
40x of same button as above on blackened tablet.
This accurate colored image shows a reddish-orange oxide coating the button, which may be a function of different amounts of heat, and possibly I got the reducing part of flame too close to button.
Because I suspect that this element may often contaminate Lead minerals I have blended these two metals as shown in this and following images.


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By having a white and blackened tablets it is easily visible as to why each has place to illustrate sublimates.

My 30+ year old manual focus and wind Canon AE-1 35mm camera with 50mm lens captures accurate colors; but, unfortunately some blurring is usually present because my hand is seldom steady, especially when using the torch with one hand and the camera in the other as I look through the lens to focus and snap the image.

The torch flame has burned off a portion of the soot that blackens the plaster tablet immediate beside and below the melted metal. The other whitish area are part of the sublimates.
Because most sublimates will fade over time (the Cd and Cd + Pb images lose color fast) all the above images were taken while the plaster was very warm to hot.
10x
The Pb+Cd on blackened tablet.
Direction of flame is from left to right.
35x
Magnified image as the above.
Color = very close to accurate.
Obvious incomplete melting/merging of the two metals, further demonstrating the volatility of both these metals. |