Petewilliamsite is a rare mineral named after the Canadian mineralogist, Peter Allan Williams. Its chemical formula is Cu6(AsO4)3(OH)6·3H2O. The spelling of this mineral starts with /p/ sound followed by a short /e/ vowel sound, then /t/ sound with a long /i/ sound, followed by /w/ sound with another short /i/ sound. It ends with /l/ sound, /i/ sound, /aɪt/ sound with a silent /e/. Its phonetic transcription is /ˌpiːtəˈwɪljəmaɪt/. The mineral is found in the Ojuela mine in Mexico, and the Tsumeb mine in Namibia.
Petewilliamsite is a rare mineral and a member of the pyrochlore group, which is a complex oxide mineral group. It was first discovered in Nevada, USA, and later also found in Russia and the Democratic Republic of Congo. The mineral is named after Pete J. Williams, an American mineralogist who made significant contributions to the field of mineralogy.
Petewilliamsite is characterized by its dark brown to black color and an adamantine to submetallic luster. It typically forms octahedral or dodecahedral crystals, often occurring as part of a granular or disseminated texture within other minerals. Its hardness on the Mohs scale is relatively low, ranging from 3 to 4, making it susceptible to scratching.
Chemically, petewilliamsite consists of a complex combination of elements including sodium, calcium, zirconium, titanium, niobium, oxygen, and fluorine. It crystallizes in the cubic crystal system and belongs to the isometric class. The specific gravity of petewilliamsite ranges from approximately 4.1 to 4.5, indicating its relatively high density.
Due to its rarity and limited occurrences, petewilliamsite does not have any significant industrial uses. Instead, it is primarily sought after by mineral collectors and researchers interested in the study of unconventional minerals. Its distinctive crystal habit and unique chemical composition contribute to its appeal among collectors. Additionally, petewilliamsite serves as an important mineral for scientific examination of geological processes and mineralogical diversity.
The word "petewilliamsite" is a mineral name, named after the mineralogist Peter Williams. It is derived by combining "Pete Williams", which is the shortened form of his first and last name, and adding the suffix "-ite" to indicate that it is a mineral. Hence, "petewilliamsite" is a compound word created specifically to honor Peter Williams and establish a unique name for the mineral.