A rock's hardness is usually measured in compressive fracture strength rather than a Mohs hardness which measures a mineral's relative hardness in comparison to other minerals. ASTM standard tests have rated gneiss at 50-200 MPa (roughly 35...
http://wiki.answers.com/Q/What_is_the_hardness_of_gneis...
|
|
|
Science question: What is gneiss on mohs scale of hardness? I don't know! But if you do, please answer the question for the rest of us who don't know. Sorry I couldn't be of much help! Bye bye now! :) ... Answers.com > Wiki Answers > Categories > Science > What is gneiss on mohs scale of hardness?
|
wiki.answers.com/Q/What_is_gneiss_on_mohs_scale_of_hard...
wiki.answers.com/Q/What_is_gneiss_on_mohs_scale_of_hardness
|
|
|
|
Home > Library > Science > Sci-Tech Dictionary ... Sci-Tech Dictionary: cerite ... Browse: Unanswered questions | Most-recent questions | Reference library...
|
www.answers.com/topic/cerite-mineralogy
|
|
|
Where is gneiss? ... What is the hardness of gneiss? ... Is gneiss igneous?
|
www.answers.com/topic/veined-gneiss
www.answers.com/topic/veined-gneiss
|
|
It is altogether incredible that people who had no more important end in view than to prepare a lure for sillocks, would have undertaken the enormous labour of making so many holes in rocks of such excessive hardness. ... The gneiss of Tiree is so tough and unworkable, that a mason was occupied for eighty-five hours...
|
ads.ahds.ac.uk/catalogue/adsdata/PSAS_2002/pdf/vol_016/...
ads.ahds.ac.uk/catalogue/adsdata/PSAS_2002/pdf/vol_016/16_459_463.pdf
|
|
Drilling through serpentine rock proved difficult, owing to its extreme hardness. Schist, gneiss, and granite were also penetrated, Throughout the progress of the boring an average of 2,500 men found work in the tunnel, the number rising at certain periods to 3,400.
|
mikes.railhistory.railfan.net/r110.html
|
|
Wutuopi is formed from a dike of gneiss rock extending in an east-west direction, and the hardness of the gneiss has left it standing alone in the ocean while the rock on either side has been eroded into bays.
|
www.amsterdam.park.org/Taiwan/Government/Theme/Environm...
www.amsterdam.park.org/Taiwan/Government/Theme/Environmental_Ecological/env82.htm
|
|
How much longer do you think this house of cards can last? We have a government that no longer bears any resemblance to the Constitution. We have fiat money that no longer bears any resemblance to real money. This country is now a hard-scrabble of good intentions, ... Let’s take money from the healthy and give it to the sick.
|
gneissguy.com/
gneissguy.com/
|
|
Kyanite has the formulae Al2SiO5 and a relative hardness of 7. It has a different hardness in two directions. An accessory mineral in gneiss and mica schist. It often found with garnet and corundum.
|
www.rocksandminerals.com/finder/H2.HTM
|
|
