Why does MinIdent-Win contain the hand specimen characteristics for only about 600 minerals?
Although there are 5,000+ known minerals (if one includes the many that remain unnamed), the vast majority of them are rare to extremely rare. As a result, the possible ranges in their properties, particularly their hand specimen properties, are not well known. Quite often, they have only been recognised in, and described from, microscopic samples; and often from a single locality and sometimes only from a single specimen. If these minerals were added to the list of those for which hand specimen properties are recorded, the chances of identifying them positively on this basis would be very slight indeed. Furthermore, they would likely clutter up the lists of possible matches because, with the lack of evidence, they could not be discriminated against. Finally, because of the rarity of these minerals, it can be argued that it is statistically very unlikely that they would be encountered.
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