Card Sort 2

ROCK			1	2	3	4	5	6	7	8	9	10
1) Adamellite		3	3	2 	1	3	2	2	2	3	3				
2) Andesite 		2	1	4	2	2	1	3	3	2	1
3) Basalt		2	1	4	2	2	1	3	3	2	1
4) Dacite		3	2	4	1	3	2	2	3	2	1	
5) Diorite-Tonalite	2	2	3	2	1	2	2	2	1	2
6) Dolerite		2	2	3	2	1	1	3	2	1	2	
7) Dunite-Peridotite	2	3	1	2	1	1	1	1	1	4
8) Gabbro		2	3	2	2	1	2	3	3	2	3	
9) Granodiorite		3	3	2	1	3	1	2	2	3	3	
10) Granite		1	3	2	1	3	1	3	2	3	3	
11) Kentallenite	?	?	?	?	?	?	1	?	?	?
12) Microgranite	1	2	2	-	3	1	2	2	3	2	
13) Peridotite		2	3	1	2	1	1	1	1	1	4	
14) Rhyolite 		1	1	4	1	3	1	2	3	3	1	
15) Nepheline-Syenite	2	1	4	2	2	3	1	1	3	1	
16) Trachyte		1	1	4	1	3	1	2	2	2	1	

Sort 1 - Amount of Quartz
1 - oversaturated (> 65% SiO2)
2 - undersaturated (45-52% silica)
3 - saturated (52-65% silica)
? - unsure

Sort 2 - Size of crystals (reflecting depth of formation)
1 - extrusive / fine grained / < 0.5 cm
2 - medium grained (< 1cm)
3 - coarse grained (> 1cm)
? - unsure

Sort 3 - Depth of formation 
1 - beneath crust (depth varies)
2 - intruded crust (30-40 k in continental crust)
3 - intruded (5 k)
4 - extruded on surface (0 k)
5 - unsure

Sort 4 - Olivine 
1 - absent
2 - present
? - unsure

Sort 5 - Colour 
1 - green
2 - grey
3 - light green -> white
? - unsure

Sort 6 - Presence of feldsparthoid
1 - couldn't have (NEVER)
2 - could have (MAY HAVE)
3 - always (DOES)
? - unsure

Sort 7 - Occurrence & frequency on surface
1- rare
2 - frequent
3 - very frequent


Sort 8 - Abundance of Calcium & Potassium
1 - low (< 5%)
2 - medium (5-8%)
3 - high (8-15%)
? - unsure


Sort 9 - Iron (FeO + Fe2O3) 
1 - rich (>15%)
2 - intermediate (10-15%)
3 - low (<10%)
? - unsure

Sort 10 - Form of formation
1 - extrusive flows
2 - small intrusives (sills etc.)
3 - major (deep-seated) intrusions
4 - small slivers (Ophiocites)
? - unsure