Rock Identification Made Easy
Feb 24, grain size: coarse grains are visible to the naked eye, and the minerals can usually be identified without using a magnifier. fine grains are smaller and usually cannot be identified without using a magnifier.; hardness: this is measured with the mohs scale and refers to the minerals contained within a rock. in simple terms, hard rock scratches glass and steel, usually signifying the minerals.Feeder for stone crushers marco machinery. feeder for stone crushers machine jxsc vibrating feeder is a heavyduty feeder which uses the vibration and gravity to push the material forward the vibratory feeder can transport the large stone materials uniformly regularly and continuously to rock crusher machine from the hopper our equipment is an ideal vibrating feeder for feeding rock aggregates.