2. Identify the igneous, sedimentary and metamorphic rocks provided in the images by placing the name in the last column to the

right. As you make your inspection of the images, ll in the texture column. Consult the list of unknowns. After you decide on

the name of the rock, ll in the remaining columns on minerals present, and rock category (igneous, metamorphic, or

sedimentary). Finally, ll in the name of the rock.

# Images Texture Minerals present Rock Category Rock Name

21, 22, 23 aphanitic Calcite, clay, feldspar,

micas, quartz, silt, silica and

sand

sedimentary Siltstone

24, 25 aphanitic feldspar sedimentary sandstone

26, 27 phaneritic Calcite, Clay, Feldspar,

Phosphates, Quartz, Silica

sedimentary breccia

28 aphanitic Olivine, Plagioclase,

Pyroxene

sedimentary basalt

32, 33 glassy Granite and rhyolite igneous obsidian

29, 30, 31 vesicular Aluminum Oxides, Calcite,

Carbonate, Iron Oxides,

Silica

igneous pumice

34 phaneritic Amphibole, Biotite,

Feldspar, Hornblade, Micas,

Muscovite or Illite,

Plagioclase, Pyroxene,

Quartz

igneous granite

35, 36, 38 phaneritic Alusite, Amphibole, Biotite,

Chlorite, Epidote, Feldspar,

Garnet, Graphite, Hornblade,

Kyanite, Micas, Muscovite or

metamorphic schist