This printable crossword puzzle on the topic of Rocks & Minerals has 25 clues. Answers range from 4 to 14 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Only mineral the hardness of 10
The softest mineral
Formed by sediment that is deposited over time
Formed by the cooling of molten magma on the earth's surface
A transformation of a pre existing rock
Any separation between rocks
A way to classify a mineral based on its ___ such as pink, grey, black etc
The __ of an object or how it feels
A way of describing how easy or difficult it is to scratch the mineral
The oldest known mineral
The way light interacts with the crystal
__ is the color of a mineral when it is crushed to a powder
__ and lava is formed to make, igneous rocks
a substance that grows off the minerals and depending on how much time it has to form its how big it turns out to be
Elements that occur in nature
Minerals containing the ion: CO3
A group of minerals that mainly contains salts
How a mineral breaks into flat surfaces
Mainly metal ores
Contains crystals and when mixed with another material it makes a igneous mineral
the largest and most important class and makes up 90 percent of the Earth's crust
Lacks silicon
The mass of a mineral
Forms from the combination of a metal with oxygen
A group or compound that has a low hardness scale