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Hornblende: Quiz


Question 1:
What transport system is Hornblende served by?
Trigonal and Monoclinic
Monoclinic prismatic
Monoclinic - prismatic H-M Symbol, Space Group: P 21/n

Question 2: Other minerals in the hornblende series include: pargasite, hastingsite and ________.

Question 3: ________, titanium, and sodium are sometimes present.

Question 4: ________ often substitutes for the hydroxyl in the structure.

Question 5: Very dark brown to black hornblendes that contain titanium are ordinarily called ________ hornblende, from the fact that they are usually a constituent of basalt and related rocks.
Igneous rockLavaFlood basaltBasalt

Question 6: It is most often confused with the minerals augite and biotite mica, both of which are black and can be found in ________ and in charnockite.
GraniteBasaltFelsicIgneous rock

Question 7: Hornblende is a common constituent of many igneous and metamorphic rocks such as granite, syenite, diorite, gabbro, ________, andesite, gneiss, and schist.
LavaKomatiiteBasaltFlood basalt

Question 8: Hornblende has a hardness of 5–6, a ________ of 2.9–3.4 and is typically an opaque green, greenish-brown, brown or black color.
Relative densityDensitySurface tensionAluminium

Question 9: A variety of hornblende that contains less than 5% of iron oxides is gray to white in color and named edenite, from its locality in Edenville, ________.
New JerseyConnecticutNew YorkMassachusetts

Question 10: It is an isomorphous mixture of three molecules; a calcium-iron-magnesium silicate, an ________-iron-magnesium silicate, and an iron-magnesium silicate.


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