What does hornblende mean?
Hornblende is a type of amphibole mineral, a complex silicate of calcium, magnesium, iron, and aluminum. It is a common constituent of igneous and metamorphic rocks, often found in black or dark green crystals. Geologists use hornblende as an indicator mineral to understand the composition and history of rocks. Its presence can provide clues about the rock's origin and the conditions under which it formed. Hornblende is named after the English chemist William Gregor Hornby and the Swedish chemist Abraham Gottlob Bergman, who first described it in the late 18th century. Understanding hornblende and its properties is essential for geologists studying the Earth's crust.
nounHornblende is a common black or dark green mineral, a complex silicate of calcium, magnesium, iron, and aluminum, often found in igneous and metamorphic rocks.
- A type of amphibole mineral
- A common constituent of igneous and metamorphic rocks
"The geologist identified hornblende in the rock sample, noting its characteristic cleavage and crystal structure."
"The rock sample contained a high percentage of hornblende and other mafic minerals."
"Hornblende is often used as an indicator mineral in geological surveys."
The plural form is used when referring to multiple samples or occurrences of the mineral.
"The rock samples contained several hornblendes with distinct crystal structures."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of hornblende
The term 'hornblende' is derived from the German words 'Horn' meaning 'horn' and 'Blende' meaning 'blind' or 'deceptive', likely referring to its deceptive resemblance to other minerals. The name was given to it by the Swedish chemist Abraham Gottlob Bergman in 1780. Hornblende is a member of the amphibole group of minerals, which are complex silicates that are common in igneous and metamorphic rocks.
How hornblende is actually used
Hornblende is a technical term used primarily in geology and mineralogy. It is not commonly used in everyday conversation.