Verified answer

1. clay

2. see above answer

3. chemistry, fracture patterns, structure, induration

4. quartz, feldspar

5. calcite, dolomite, gypsum

A litle research on your own would have told you the answers AND taught you an amazing skill called learning...

1. montmorillinite, smectite, other clay minerals (absorb water)

2. most carbonates, especially calcite. Halite (table salt) also dissolves in water.

3. Dry weather preserves calcite: Wet Pennsylvania weather erodes calcite at a faster rate than surrounding rocks, forming valleys.

4. Soft = mildly acidic = sulphides, sulphates

5. Hard water = alkaline = carbonates (don't know any others)

1. No clue

2. Calcite, Dolomite, Aragonite. Dolomite only dissolves in acidic water when it is powdered. Anything with Carbonate is going to dissolve.

3. No clue.

4. No clue.

5. No clue.

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