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I~ <br />1 <br />'1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />term Grade Symoal Diagnostic features <br />Fresh I rlo al[era[ion o~ the rock Hass <br />Slightly altered Z Less than 5, or rack mass >hows <br />evidence or al [era[ion <br />Moderately altered 3 5 co Z5, of rock mass altered <br />Strartgly altered 4 Z` to 50~ or mass altered <br />Highly altered 5 50 to 100: of mass altered <br />Column 10 Description <br />A brier summar,, or princiaai geological caaracterist~cs <br />of the unit being described snauld be given. This Nill <br />inciude: <br />colour <br />grain size <br />fabric - scnistose, slatey, gneissic etc. <br />major minerals <br />ROCX TYPE <br />Comments should be made on features within the unit <br />that may be of importance. For example if shear zones <br />exist that are too small to be recorded as individual <br />units, comments should be made as their frequency, <br />thickness, condition etc.. <br />