Bayldonite is a mineral with the chemical formula PbCu3(AsO4)2(OH)2. The word is pronounced [beɪldənaɪt]. The first part of the word, "bayl", is spelled with a "y" because it originates from the name of the mineralogist Arthur Bayldon. The second part, "-donite", is a common suffix used in mineral names. The phonetic transcription of the word helps to understand its pronunciation, with the stress on the second syllable and the use of the "aɪ" diphthong in the first syllable.
Bayldonite is a mineral compound with the chemical formula Cu3PbO(AsO4)(OH)2. It belongs to the phosphohedyphane group of minerals and is classified as a secondary mineral. Bayldonite typically occurs as small prismatic or pyramidal crystals, but can also be found in more massive forms. It has a vitreous to resinous luster and can display colors ranging from bright green to yellow-green.
This mineral was first discovered in the 19th century in Cornwall, England, and was named after the English mineralogist and geologist Thomas Bayldon. It is commonly found in areas where lead and copper minerals are present, often forming as a weathering product of these primary ore minerals. Bayldonite is also found in some hydrothermal mineral deposits.
In terms of its physical properties, bayldonite is relatively soft with a Mohs hardness of 4 to 4.5. It has a distinct cleavage along vertical prism faces and a brittle tenacity. It is also known to be translucent to transparent.
Bayldonite is not a widely known or commercially valuable mineral but holds significance for mineral collectors and enthusiasts due to its striking coloration and unique crystal habits. Its presence can indicate the presence of other valuable ore minerals within an area, making it of interest to geologists and prospectors.
The word "bayldonite" is a mineral name, derived from the name of the mineralogist and botanist Samuel Pasfield Oliver Bayldon (1807-1856). Bayldon was an English amateur geologist who collected minerals and plants in various parts of the world during the mid-19th century. He made significant contributions to the field of mineralogy, and several minerals were named in his honor, including "bayldonite". The suffix "-ite" in mineral names generally signifies that it is a mineral.