Download Advanced Geology Field Trip Rock Table

AdvancedGeologyFieldTripRockTable
1:Calcite
2:Pyroxene
3:Gypsum
4:Amphibole
5:Quartz
Mineral
(whiteorclear,
diamond‐shape,white
streak,hardness3)
Mineral
(grayish,largegrain
glitters,hardness5‐6,
lightgreenstreak)
Mineral
(white,soft‐looking,
hardness2,white
streak)
Mineral
(grayish,largegrain
glitters,hardness5‐6,
colorlessstreak)
Mineral
(white‐clearcolor,no
cleavage,hardness7+)
6:Mica
7:Feldspar
8:Plagioclase
9:Bauxite
10:Limonite
Mineral
(cleavageonone
plane,silvery‐gold
color,dividesinto
sheets)
Mineral
(pink,shiny,hardness
6,flatcleavageontwo
planes)
Mineral
(grayrockwithlarge‐
grainsparklybits,
lighterincolorthan
gabbro,hardness6)
AluminumOre
Igneous,Sedimentary
(whitestreak,hardness
2‐3,brown/red/orange
withdarkcircles)
11
Hematite
12
Pyrolusite
13
Magnetite
14
Copper
IronOre
(darkred,comesoff
rubsoff,darkred‐
brownstreak)
ManganeseOre
(verydarkrock,dark
streak,hardness6)
IronOre
(magneticironore,
heavy,black,leaves
darkstreak)
CopperOre
(darkrockwithbright
greenspotsorstripes)
Iron‐SulfurOre
(gold,brassy,metallic,
andleavesagreenish‐
blackstreak)
16
Fluorite
17
Sulfur
18
Barite
19
Graphite
20
Talc
Mineral
(lookslikegreen
glass,whitestreak)
Mineral
(yellowcolor,smells
likerotteneggs)
Mineral
(whitewithpink
streaks/tint,white
streak,hardness3)
Mineral
(darkgray,leavesadark
markonpaperand
streakplate)
Mineral
(layered,hardness1,
greasyfeel,gold‐
brownstreak)
21
Tufa
22
Limestone
23
Conglomerate
25
Sandstone
Sedimentary,avariety
oflimestone
(lightcolor,porous,
reactswithacid)
BiologicalSedimentary
(grayrockthat
bubbleswithacid,
hardness3)
ClasticSedimentary
(Pink‐brown‐gray,
lookslikepebbles
cementedtogether.)
24
Fossiliferous
Limestone
26
Shale
27
Bituminous
Coal
28
Unknown
Rocks
ClasticSedimentary
(gray,fine‐grained,
hardness3)
BiologicalSedimentary
(jetblack,soft,and
brittle,shiny)
(anyrocksyouhave
noideaaboutwhen
you’redone,puthere)
15
Pyrite
BiologicalSedimentary
(smashedshellsput
together,acidreaction)
ClasticSedimentary
(grainsofsand
cementedtogether,no
streak,hardness7)
29
Porphyry
30
Obsidian
Igneous
(black‐whitespeckled
rock,veryhard,
hardness6‐7)
ExtrusiveIgneous
(black,glass‐like,
conchoidalcleavage‐
lookslikeashell)
31:Felsite
32:Pumice
33:Basalt
34:Gabbro
35:Granite
Igneous
(pinkrockwithfew
smallsparklyflecks,
hardness3‐4)
ExtrusiveIgneous
(verylightweight,
floatsinwater,fullof
holes,lightincolor)
ExtrusiveIgneous
(darkcolor,
lightweight,fullof
holes)
IntrusiveIgneous
(grayish,largegrain
glitters,hardness5‐6,
colorlessstreak)
IntrusiveIgneous
(pink‐graywithdark
flecks,hardness6‐7)
36:Slate
37:Gneiss
38:Marble
39:MicaSchist
40:Quartzite
Metamorphic
FromShale
(darkgray,lookslike
sheetspressed
together,layered,
hardness2‐3)
Metamorphic
FromGranite
(pronounced“nice”,
blackandwhite
speckled,banded,
glitters)
Metamorphic
FromLimestone
(white,largergrains
glittersections,
hardness3‐4)
Metamorphic
FromQuartzandMica
(silvery,layered,fine
grainsglitterinthe
sunlight)
Metamorphic
FromSandstone
(darkrock,hardness
7+)
IronOre
(yellowishbrown,
yelloworbrown
streak)
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HowtoFigureoutWhichRockisWhich?
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31.
Findtheyellowoneandseeifitsmellslikerotteneggs.(#17:sulfur)
Findthesparklygoldone–useyourstreakplatetofindifitleavesadarkstreak.(#15:pyrite)
Findasilvery‐goldonethatlookslikeitismadeupofsheetssquashedtogether.(#6:mica)
Findtwolightweightrocksfullofholes.There’sonethatfloatsinwater(#32:pumice)andonethatdoesn’t
(#21:tufa).
Findapiecethatlookslikegreenish‐clearglass(#16:fluorite)
Findaredrockthatwhenrubbed,thecolorcomesoffonyourfingers.Italsoleavesared‐brownstreak.
(#11:hematite)
Findayellow‐brownrockthatleavesayelloworbrownstreak(#10:limonite)
Findapinkrockthatisshiny,andcan’tbescratchedbyasteelnail.It’salsogotstraightsidesonacoupleof
thesurfaces(#7:feldspar).
Findared‐orangerockthatlookslikeithasdarkcirclesonit.(#9:bauxite)
Findapiecethatlookslikeblackglass(#30:obsidian)withconchoidalcleavage
Findabrown,flatpiecethatisslipperyandgreasytotouch,canbescratchedbyyourfingernail(#20:talc)
Findtwopinkrockswithdarkspots.There’sonethatlookslikeit’smadeoutofpebblescementedtogether
(#23:conglomerate)andonethatlookslikethedarkspotsarepartoftherockitself(#35:granite).
Findfivewhiterocks.Findtheonethatcanscratchglass(#5:quartz).
Thefourremainingwhiterockshavedifferentproperties:onelookslikeatransparentcubeandisveryflat
onallsides(#1:calcite),oneissoft‐looking,leavesawhitestreak,andcanbescratchedbycalcite(#3:
gypsum),oneissparklyandreactswithacid(#38:marble),andonehasnon‐whitesurfaces(#18:barite)
Findalight‐coloredpiecethatlookslikeabunchofsmashed‐upshellscementedtogether(#24:
fossiliferouslimestone)
Findadull‐pinkish‐redrockthatlookslikeitismadeupoftinygrainsofsandcementedtogetherthathas
goodcleavageononeside(#25:sandstone)
Runamagnetoveryourdarkcoloredrocksandfindtheonethatisslightlymagnetic(#13:magnetite)
Findashiny,blacklightweightrockthatbreaksalongitslength(#27:bituminouscoal)
Findadarkgrayrockthatwritesonpaper(#19graphite),usuallythin.
Findadarkrockthathasgreenbitsorstripesonit(#14:copperore)
Lookattherestofyourdarkrocks,andfindthefourthatareglittery.There’sthreethataresoliddarkcolor
(#34:gabbro),(#2:pyroxene“pie‐ROCK‐scene”)and(#4:Amphibole“am‐fi‐BOWL”)andonethatis
stripedorlayered(#37:gneiss)
Lookforasparklygrayish‐silverrock(#39:micaschist).Thisismadefromquartzandmica.
Grayrockthathascleavagethatlookslikestairsteps,lookslikeflatsheetspressedtogether,canbe
scratchedbyanailandcoin(#36:slate).
Findarockthatlooksalotlikeslate,onlyinsteadofstepsit’sgotflatsurfaceswhereitbroke(#26:shale)
Findagrayrockwithlargesparklybits,lighterincolorthangabbro,pyroxene,andamphibole.(#8:
plagioclase“plage‐EE‐O‐claize”)
Findadarkrockthatisfullofholes(#33:basalt).Veryhardrock.
Findablack‐whitespeckledrock,veryhard,thatcanscratchglass(#29:porphyry“POOR‐for‐ee”)
Findalightweightpinkrockthatcanbescratchedbyanail(#31:felsite)thathasacoupleoflittlebitsof
glitteryflakesinit.
Findaverydarkrockthatleavesathin,hardtomakedarkstreak.(#12:pyrolusite“pie‐ROL‐you‐site”)
Findagrayrockthatreactswithacid.(#22:limestone)Ifitdoesn’t,checkyourshaleandslaterockstosee
ofanyofthosereactwithacid.Theseareoftenmixedupwitheachother.
Findarockthatcanscratchglass(#40:limestone)
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