|
 Diamond Core Drill Bits
FOR MINERAL EXPLORATION
RockSmith have a complete range of Diamond Core Drill Bits available including NQ, NQ2, HQ, HQ3, PQ, PQ3, NMLC, BQ and BQ3, Ream Shells, Surface Set Diamond Bits, Casing/Rod Shoe, etc.
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Impregnated Bit Matrix Selection Guide
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Rock Hardness
(MOHS)
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Ultimate Compressive Strength (Mpa)
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Rock
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Matrix Type
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Hardness
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Colour Selection
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Hardness
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Types
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Abrasiveness
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4
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<3
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Soft
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Shale, Clay, Volcanic tuff, Gypsum, Calcite
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Low
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RS1
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50 - 55
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Black
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High
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RS1*
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Soft Sandstone, Clay Slate, Limestone
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Low
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RS2
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High
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RS2*
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5
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3 to 5
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Medium Hard
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Sandstone, Sand-shale, Sand-Limestone, Soft Schist, Hard Limestone, Norite Granite
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Low
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RS3
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45 - 48
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Red
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High
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RS3*
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Soft Dolomite, Limonite Sand, Hard Shale
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Low
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RS4
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High
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RS4*
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6
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10 to 25
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Hard
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Hard Schist, Hard Streakstone, Andesite, Dacite, Diabase, Diorite, Dolomite, Hematite, Mica Schist
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Low
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RS5
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38 - 43
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Blue
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High
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RS5*
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Marble, Limonite, Peridotite, Silicifed Schist, Syenite
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Low
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RS6
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High
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RS6*
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7
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25 to 70
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Hard
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Andesite, Diabase, Basalt, Diorite, Gabbro, Granite, Quartzite, Rhyolite
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Low
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RS7
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30 - 40
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Green
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High
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RS7*
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Grandiorite, Gneiss, Pegmatite, Porphyry, Trachyte, Silicified Volcanics
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Low
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RS8
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High
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RS8*
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8
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70 to 200
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Very Hard
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Granite, Basalt, Hard Streakstone, Jasperlite, Quartzite
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Low
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RS9
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20 - 30
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Yellow
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High
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RS9*
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Rhyolite, Crystauize Gneiss, Chert, Taconite
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Low
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RS10
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High
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RS10*
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9
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>200
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Extremely Hard
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Streak Quartzite, Silicious Stone, Chert
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Low
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RS11
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15 - 21
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Silver
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High
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RS11*
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Hard Sandstone, Quartzite, Iron Stone, Taconite
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Low
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RS12
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High
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RS12*
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