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the term mineraloid substance was in 1909, by mineralogist and geologist Julian Niedzwiedzki, in identifying and describing amorphous substances that resemble minerals.

Examples

* Allophane, solid (IMA/CNMNC valid mineral name)
* Amber, non-crystalline structure, organic
* Anthracite or hard coal
* Bituminous coal
* Chlorophaeite
*

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