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Obsidian
Fossilized shells, Reacts to Hcl, Hardness 3
Limestone (Coquina)
Silver Streak
Graphite
Non magnetic
Galena
Pyrite
Fluorite
Slate
Calcite
Shist
Granite
Quartz
Diorite
Granite
Thin sheets
Mica
Magnetic
Magnetite
Conglomerate
Reacts to Hcl
Marble
Gneiss
Less shiny
B coal
More shiny
A coal
Shale
Chert
Floats
Pumice
Hardness 2
Gypsum
Hardness 7
Garnet