hornblende

• In my unscientific mind, the formations are without form, and void; and you might as well talk Chinese to me, as to embroider your conversation with the terms "hornblende," "mica," "limestone," "slate," "granite," and "quartz" in a hopeless attempt to enlighten me as to their merits. —  The Shirley Letters from California Mines in 1851-52
• This stone is a volcanic rock called hornblende, of very fine grain, with minute specks of mica. —  Brittany ; Its Byways
• Under the microscope, the rock consists of biotite, hornblende, serpentinous pseudo-morphs after olivine and possibly after enstatite and magnetite, and may be described as a mica-hornblende-picrite. —  Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary"
• The delivery of it to the prince of Wales was regarded as a transfer of political dominion, an admission that the latent hopes of the Bhonsla family were now merged in loyalty to the crown of England The blades of the best weapons have been made for many ages of the magnetic iron obtained twenty miles east of Nirmul, a few miles south of the Shisla Hills, in a hornblende or schist formation. —  Lippincott's Magazine of Popular Literature and Science, Volume 22. October, 1878.
• If the stuff does not answer the magnet, it is probably schorl (tourmaline), hornblende, or dark quartz. —  To The Gold Coast for Gold, Vol. II A Personal Narrative

Used in the Same Context