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When a rock with a portruding edge that is less than ninety degrees in angle is struck on that edge and produces a conical shaped chip or "flake", leaving behind a concave flake scar where the material was removed from the rock, that is a conchoidal mineral.
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∙ 11y ago
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In how many ways do minerals break?
A mineral breaks in two ways: cleavage (a definite straight and even break) and fracture (jagged and unpredictable)
Name two properties of minerals that depend on chemical bonds?
Examples: chemical reactivity, toxicity, flammability, stability.
Name the major groups of minerals and give at least two examples of minerals in each group?
silicate: feldspar and mica non-silicate: halides and native gold
What takes place when two areas of land are heated unevenly?
convection
What 2 ways can minerals break?
Minerals break in the main two ways cleavage and fracture. Cleavage is breaking in flat planes but fracture is more uneven even unpredictable. The hardest mineral to break would be the diamond, which is placed at a ten on Moh's hardness scale.
Two examples of minerals that break unevenly are talc and?
calcium
What are some evaporite minerals?
Halite and gypsum are two examples of evaporite minerals.
What are two examples of index minerals?
kyanite and sillimanite
What is two examples of minerals necessary for good health?
Well, they are all important but two examples would be calcium and magnesium.
The two major types of minerals are what?
Two examples are quartz and mica. Minerals are also classified as metallic or non-metallic.
What are the two examples of a hexagonal system?
Vanadinite and molybdenite are two minerals that are categorized in the hexagonal crystal system.
Two examples of radioactive minerals are carnotite and uraninite?
Yes, you are right. It's carnotite and uraninite.
In how many ways do minerals break?
A mineral breaks in two ways: cleavage (a definite straight and even break) and fracture (jagged and unpredictable)
Name two properties of minerals that depend on chemical bonds?
Examples: chemical reactivity, toxicity, flammability, stability.
What are two minerals with cleavage?
Halite and Calcite. Halite has what is known as cubiccleavage, where there is cleavage in three directions at 90 degree angles. Calcite has what is known as rhombohedral cleavage, where there is cleavage in three directions but at 120 and 60 degree angles.
Name the major groups of minerals and give at least two examples of minerals in each group?
silicate: feldspar and mica non-silicate: halides and native gold
What are the two ways that earth is unevenly heated?
Direct and indirect sunlight.
