Term
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Definition
#1 Calcarenite/ Fossiliferous Limestone / Skeletal Limestone
Reacts with HCL
Composed of sand size grains, feels rough
Some larger shells may be seen
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Term
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Definition
Sedimentary Rocks
#5 Breccia
Consists of large, angular grains |
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Term
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Definition
#4 Chert
Microcrystalline variety of quartz, so it scratches glass
May exhibit conchoidal fracture |
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Term
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Definition
#3 Quartz Sandstone
Sand size grains, feels rough
Made up of mostly quartz, will scratch class
Tends to look fairly homogeneous
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Term
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Definition
#2 Bituminous Coal
Black color, may be sooty or bright
May show layering
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Term
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Definition
Sedimentary Rocks
#7 Conglomerate
Consists of large, rounded grains
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Term
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Definition
#6 Micrite / Micritic Limestone
Reacts with HCL
No visible grains |
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Term
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Definition
#10 Rock Salt
Salty Taste
Visible Crystals
Brittle |
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Term
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Definition
#9 Hematitic Sandstone
Sand sized grains, so it feels rough
Brown/rust color due to the hematite present
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Term
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Definition
#8 Coquina
Reacts with HCL
Made up of large, gravel sized shell or coral fragments |
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Term
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Definition
#12 Mudstone
Mudstone used as a general term for all detrital rocks made up of mud sized particles.
Smooth, may appear to split into layers (shale) or crumble into blocks (claystone) |
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Term
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Definition
#11 Oolitic Limestone
Reacts with HCL
Comprised of spherical grains that resemble small pearls, called ooids
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Term
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Definition
Sedimentary Rocks
#13 Chalk
Reacts with HCL
Very soft
Has distinct white color
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Term
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Definition
#15 Arkose
Sand sized grains, so it feels rough
Contains grains of feldspar (pink grains) |
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Term
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Definition
#14 Lignite
Dull, dark brown, brittle rock. |
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