Sio4 4– tetrahedra join with ions to produce the mineral olivine in the rock peridotite.

Answer;

Independent; Mg2+ and Fe2+

-Independent SiO4 4– tetrahedra join with Mg2+ and Fe2+ ions to produce the mineral olivine in the rock peridotite.

Explanation;

-The silicon-oxygen tetrahedron is a four-sided figure with a silicon atom in the middle bonded to four neighboring oxygen atoms.The simplest silicate structure, that of the mineral olivine, is composed of isolated tetrahedra bonded to iron and/or magnesium ions.

-Olivine is the name of a group of rock-forming minerals that are typically found in mafic and ultramafic igneous rocks such as basalt.  Olivine is a magnesium iron silicate with the formula (Mg2+, Fe2+)2SiO4. Silica tetrahedra, made up of silicon and oxygen, form chains, sheets, and frameworks, and bond with other cations to form silicate minerals.

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glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.