Lesson 1: Ore bodies by their shape

Question 1

accumulations of mineral substances that are approximately equal in all measurements

Answer 1

Isometric ore bodies

Question 2

geological formations such as sheets, veins, and lenses that have two long dimensions and one short dimension

Answer 2

Flat ore bodies

Question 3

oval-shaped in cross-section and form when ore substances from magmatic melts or hydrothermal solutions concentrate in one direction

Answer 3

Ore pipes or pipes

Question 4

a tabular body separated from other rocks by bedding planes

Answer 4

sheet

Question 5

ore bodies formed when a mineral substance fills fracture cavities or when there is metasomatic substitution of mineral substances for rocks along cracks

Answer 5

Vein

Question 6

contact

Answer 6

Selvage

Question 7

a lenticular geological body that tapers out markedly in
all directions; its thickness is slight compared
to its length

Answer 7

Lens

Question 8

In terms of morphology, ______ and _______ are transitional formations between isometric and flat ore bodies.

Answer 8

lenses and lenticular beds