Specimen A is
 fluorite.
 gypsum.
 calcite.
 quartz.
 *feldspar.

Specimen B has
 a dull or earthy luster.
 a silky luster.
 a metallic luster.
 *a glassy luster.
 a pearly luster.

The hardness of Specimen B is
 3.
 4.
 5.
 6.
 *7.

Specimen B has
 basal cleavage.
 cubic cleavage.
 rhombohedral cleavage.
 octahedral cleavage.
 *none of the above.

Specimen B is
 fluorite.
 gypsum.
 calcite.
 *quartz.
 feldspar.

Specimen C has
 *basal cleavage.
 cubic cleavage.
 rhombohedral cleavage.
 octahedral cleavage.
 conchoidal fracture.

Specimen C is
 hornblende.
 magnetite.
 chalcopyrite.
 galena.
 *biotite.

The hardness of Specimen D is
 1.
 2.
 *3.
 4.
 5.

Specimen D has
 basal cleavage.
 cubic cleavage.
 *rhombohedral cleavage.
 octahedral cleavage.
 conchoidal fracture.

Specimen D
 *effervesces.
 attracts a magnet.
 *has crystals faces.
 octahedral cleavage.
 conchoidal fracture.

Specimen D is
 fluorite.
 gypsum.
 *calcite.
 quartz.
 feldspar.

The hardness of Specimen E is
 1.
 *2.
 3.
 4.
 5.

Specimen E is
 fluorite.
 *gypsum.
 calcite.
 quartz.
 feldspar.

Specimen F has a
 *steel-gray metallic luster.
 brassy-yellow metallic luster.
 dull or earthy luster.
 glassy luster.
 pearly luster.

Specimen F has 
 basal cleavage.
 *cubic cleavage.
 rhombohedral cleavage.
 octahedral cleavage.
 conchoidal fracture.

The specific gravity of Specimen F is
 very low, maybe 1.5.
 low, maybe 2.2.
 medium, maybe 3.0.
 high, maybe 5.3.
 *very high, maybe 7.4.

Specimen F is
 hornblende.
 magnetite.
 chalcopyrite.
 *galena.
 biotite.

Specimen G
 effervesces.
 *attracts a magnet.
 has six cleavage directions.
 feels greasy.
 has a very low specific gravity.

Specimen G is
 hornblende.
 *magnetite.
 chalcopyrite.
 galena.
 biotite.

Specimen H has a
 steel-gray metallic luster.
 *brassy-yellow metallic luster.
 dull or earthy luster.
 glassy luster.
 pearly luster.

Specimen H has a
 light yellow streak
 dark red streak.
 an orange streak.
 light blue streak.
 *dark gray streak.

Specimen H is
 hornblende.
 magnetite.
 *chalcopyrite.
 galena.
 biotite.

The hardness of Specimen I is
 2.
 3.
 *4.
 5.
 6.

Specimen I, which has octahedral cleavage, is
 *fluorite.
 gypsum.
 calcite.
 quartz.
 feldspar.

Specimen J, known for two cleavage directions intersecting at 60 and 120 degrees, is
 *hornblende.
 magnetite.
 chalcopyrite.
 galena.
 biotite.