An acidophile is an organism that can or must live in an acidic environment. An acidic environment is one that has a pH below 6. Acidophiles are able to live and thrive to a highly acidic environment, particularly at pH 2.0 or below. Acidophiles are considered as an extremophile.
Biology Professor (Twitter: @DrWhitneyHolden) describes the 3 classifications of bacteria based on pH preferences, including acidophiles, neutrophiles, and alkaliphiles. Examples are given of places where you might find each class.,
Always consider how you search. If you use inverted commas (eg. "Ancient Egypt") you will perform a more accurate search.
Also, consider limiting the results to educational insitutions by adding site:.edu to your search terms
Acidophiles are organisms that grow at an optimum pH below 3–4. These are a diverse group of organisms included in archaea, bacteria, fungi, algae, and protozoa growing in acidic conditions, reported from natural environments like solfataric fields, sulfuric pools, and geysers, and artificial environments like areas associated with human activities like mining of coal and metal ores.