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Three actually. There are two separate rest days, which splits the race into three sections.
there are three, iron cobalt and nickel
1. hipsters 2. warblers 3. new directions
No, quartz has no cleavage.
Gemstone is a mineral or organic material that has been selected for its beauty, durability, and rarity and then used to make jewelry or other human adornments.
Calcite exhibits cleavage in three directions.
cube
Rock salt.
Halite
The mineral cobaltite, CoAsS, has a brittle fracture, and exhibits good cleavage in three directions.
Calcite, a crystallized form of limestone.
Two directions of cleavage, at 90 degrees to each other.
Halite has perfect cleavage in three directions and is in the cubic crystal system.
Table salt is sodium chloride. Its crystals are cubical.
Three.
In any three orthogonal directions.
Diamond, an elemental mineral, is the hardest mineral on the Mohs scale of mineral hardness (10). It has a specific gravity of around 3.5, has conchoidal fracture, has a colorless streak, occurs in the isometric-hexoctahedral mineral crystal system, is an allotrope of carbon, exhibits perfect cleavage in three directions, has an adamantine luster, and appears in many colors from clear to black.