1) Fibrous form, lustre- silky, splintery fracture.

Answer- SERPENTINE

2) Massive form, colour-lead grey, streak, - lead grey, lustre-metallic, sp gravity- 7.4-7.6, chemical composition- PbS.

Answer – GALENA

3) Lamellar form, colour- black, lustre- pearly, cleavage-basal pinacoid.

Answer - MUSCOVITE OR TALC

4) Branded form, mostly found with hematite, lustre- waxy, cleavage- absent, hardness- 7.

Answer – FLINT

5) Granular pisolitic form, crystal system- amorphous, lustre- dull, fracture-uneven, chemical composition AL2O3.2h20

Answer – BAUXITE

6) which shows pearly lustre

Answer - APOPHYLLITE , MUSCOVITE , TALC

7) Which is bluish in colour with bladed form

Answer - KYANITE

8) which shows fibrous form and splintery fracture

Answer – SERPENTINE

9) Name the parent rock of marble and quartzite

Answer - METHMORPHIC AND IGNEOUS RESPECTIVELY.