It was near the middle of the hardness matrix.
extra hard
Collagen fibers within the bone matrix.
The organic portion of matrix is important in providing tensile strength, ability to resist stretch, and flexibility. It is not important in providing hardness.
Diamonds are hard based on the matrix -- lattice structure -- of the carbon atoms that form the mineral.
Bone salts, such as calcium and phosphorus, provide hardness to bones by forming a mineralized matrix. The organic matrix, composed mainly of collagen fibers, gives bones flexibility by providing a framework for mineral deposition. Together, bone salts and the organic matrix work synergistically to make bones both strong and flexible.
The mineral component of bone, primarily hydroxyapatite, contributes to its hardness. Hydroxyapatite is a crystalline form of calcium and phosphate that provides strength and rigidity to bone tissue. The arrangement of collagen fibers in the bone matrix also plays a role in its hardness.
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Bone salts (calcium, mainly) lend hardness; the protein-rich organic matrix permits some flexibility
The protein fibers of the bone matrix are mainly composed of collagen, which provides strength and flexibility to bones. These fibers are embedded in a mineralized matrix made of calcium and phosphate crystals, which contribute to the hardness and rigidity of bones.
Materials can be classified simply as metals and nonmetals. There are other subdivisions also used. These would include:MetalsCeramics and GlassesPolymersCompositesComposites can be further split intoPolymer matrix compositesMetal matrix compositesCeramic matrix composites
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