Earth science HW 4/24/2012

Read and take notes for ch 5, Igneous Rocks, pgs 98 - 113.

Complete individual write ups for the Mineral ID lab using class data below.  See posting on 4/16/2012 for guidesheet info.

1st period;

Density of minerals 1st period science 1 -Orth
Group	Density: Quartz (g/cm3)	Density: Galena (g/cm3)	Density: Magnetite(g/cm3)	Density: Calcite (g/cm3)	Density: Hematite (g/cm3)
FK,LB,TS,KB,SS	2	3	5.5	2.5	5
HD,LS,KS,BV	2.9	8.2	2.6	4.9	3.7
MA,KA,CM	2.5	7.4	5.4	2.4	5.3
ML, KD,JC,	2.4	7.3	5.4	3.5	2.6
BM,DB,MJ,AG,JF	3.2	6.6	4	1.3	3.2
NH,JC,GC,RP	2.6	6.2	6.9	3.2	6.2
FL,KA,DL,CS,EGV	6.3	2.5	5.2	5.5	5.3
class average
Accepted values	2.6	7.5	5.2	2.7	5.3

3rd period:

 5th period:

Density of minerals 5th period science 1 -Orth 2012
		Density (g/cm3)
Group	Quartz (g/cm3)	Galena (g/cm3)	Magnetite(g/cm3)	Calcite (g/cm3)	Hematite (g/cm3)
OT,RN,KD	2.8	6.8	4.1	3	3.6
SB,KC, JC	1.7	5.7	4.4	2.2	4.3
RE,KP,HO	3.1	5.3	3	3.3	5.7
AA,JA,AD	2.6	7.3	2.9	3.7	3.6
DD,DS,FR	3	8.9	4.6	2.8	3.4
CA,TG,AC	2.8	7.8	4.3	2.7	3.6
LL,RS,BR,KK	2.6	5.1	3.2	2.6	4.1
TL,KA,DP	2.8	3.9	2.3	2.9	3.7
FW,KM	1.7	12.7	7	3.1	2.9
class average
Accepted Density/	2.6	7.5	5.2	2.7	5.3
specific gravity
	% error + A - o/ A * 100%

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Density of minerals 3rd period science 1 -Orth
Group	Density: Quartz (g/cm3)	Density: Galena (g/cm3)	Density: Magnetite(g/cm3)	Density: Calcite (g/cm3)	Density: Hematite (g/cm3)
RV,AR,JC,JQ	2.2	3.1	3.5	4.7	2.7
KD,KK,CM,KP,HH	2.8	5.7	3.9	2.9	3.8
CB,JM,CDC	2.2	4.4	3.5	2.4	2.7
BB, OG,NB, DG	1.5	7.2	3.9	3	3.8
EV,MD,FT,AR	2.6	5.7	3.7	2.3	3.5
DR,MW,SO,MP	3.2	2	3.1	3.3	4
JN,CI,AE,JO	2.3	7.9	2.7	2.3	5.7
ML,JT,AM	3.7	2.3	3.4	3.3	4
class average
Accepted Density/	2.6	7.5	5.2	2.7	5.3
specific gravity