Wuxi IKESAN Machinery Co., Ltd.

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Knowledge about all types of rocks-its hardness

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Usually we use MPa to descrip rock harness, following is the table for different rocks with roughly hardness

NAMEMpa
Rough rock196-343
gabbro177-294
diorite177-294
basalt147-294
quartzite147-294
granite98-245
Rhyolite porphyry98-245
marble98-245
slate98-196
Dolomite78-245
Quartz schist69-178
Mica schist59-127
tuff59-167
gneiss49-196
limestone29-245
conglomerate19.6-196
marl12-98
shale4.9-49