Talc? I don't think so! Whole Pattern Fitting

Many products are not regulated by a governing body. Quality control is in the hands of those who use these products. For example, Figure 1 shows a white powder from a bottle labeled "talc." When this powder was run on the MiniFlex, talc was observed only in trace quantities (Figure 2). Talc is typically identified as magnesium silicate hydroxide. However, this material is primarily composed of calcite and dolomite identified as calcium/magnesium carbonate (Figure 3).


talc1


talc2

This material was intended to be used as a drying agent; therefore the intended use is still possible. However, if you were looking for a silicate source, you would not find it here.


talc3

The fifth generation MiniFlex is a general purpose X-ray diffractometer that can perform qualitative and quantitative analysis of polycrystalline materials. The MiniFlex is available in two variations. Operating at 600 watts (X-ray tube), the MiniFlex 600 is twice as powerful as other benchtop models, enabling faster analysis and improved overall throughput. Running at 300 watts (X-ray tube), the new MiniFlex 300 does not require an external heat exchanger. Each model is engineered to maximize flexibility in a benchtop package. Read more...

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