Phenacite is a neosilicate mineral that is sometimes used as a gemstone. This specimen was found on Mount Antero in Chaffee County, Colorado. It was collected by George L. English and Company.
1887 – 1891
George L. English & Company George L. English and Company was a mineral business founded by George L. English in Philadelphia, Pennsylvania in 1887 with partner Edwin C. Atkinson. In 1890 his business expanded to New York City and in 1905 the entire business and stock was bought by Ward's Natural Science Establishment.