lab12 - GY 302 Crystallography and Mineralogy Lab 12...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
GY 302: Crystallography and Mineralogy Lab 12: Classes VIII: Silicates 4: Phyllosilicates Drawer 13 Your task today : Grin and bear it…. today will be a tough day in the lab. Minerals that are asterisked (*) will not be on the next mineral quiz in two weeks time (Phyllosilicates). Mineral Formula System Specimen Quality “Clay” Minerals ”Smectite/Montmorillonite” (Na,Ca) 0-3 (Al,Mg) 2 Si 4 O 10 (OH) 2 ·n(H 2 O) Monoclinic f,g *Bentonite (Na,Ca) 0-3 (Al,Mg) 2 Si 4 O 10 (OH) 2 ·n(H 2 O) Monoclinic g,g Diatomite SiO 2 (opaline; biogenic) Amorphous g(x4) Illite (K,H 3 O)(Al,Mg,Fe) 2 (Si,Al) 4 O 10 [(OH) 2 ·(H 2 O) Monoclinic g Kaolinite Al 2 Si 2 O 5 (OH) 4 Triclinic g(x4) Nontronite Na 0.3 Fe 2 (Si, Al) 4 O 10 (OH) 2 ·n(H 2 O) Monoclinic g, g Talc Group (6 minerals) Pyrophyllite Al 2 Si 4 O 10 (OH) 2 Triclinic g, g, g Talc Mg 3 Si 4 O 10 (OH) 2 Monoclinic f, g(x5) Allophane Group (5 minerals) *Allophane Al 2 O 3 ·(SiO 2 ) 1.3-2 ·((H 2 O)) 2.5-3 Amorphous g Chlorite Group (19 minerals)
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/05/2012 for the course GLY 302 taught by Professor Staff during the Spring '11 term at S. Alabama.

Ask a homework question - tutors are online