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- Brokenhillite is a rare mineral that is only found in the far-western regions of New South Wales in Broken Hill, Australia. Although it has been given a name and chemical formula, it has not been approved by the International Mineralogical Association primarily because it is a manganese silicate of the group which means the compositional similarities are too great to be an approved mineral. Brokenhillite structure is either composed of iron or manganese with the formula (Mn+2, Fe+2)8Si6O15(OH,Cl)10. The actual components inside brokenhillite can be determined using a diffractometer. The structural basis of this mineral is determined to be phyllosilicate within the pyrosmalites due to the octahedral structure, with one perfect cleavage, a hardness of about 4.5, and a streak of light brown. (en)
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- Brokenhillite is a rare mineral that is only found in the far-western regions of New South Wales in Broken Hill, Australia. Although it has been given a name and chemical formula, it has not been approved by the International Mineralogical Association primarily because it is a manganese silicate of the group which means the compositional similarities are too great to be an approved mineral. Brokenhillite structure is either composed of iron or manganese with the formula (Mn+2, Fe+2)8Si6O15(OH,Cl)10. The actual components inside brokenhillite can be determined using a diffractometer. The structural basis of this mineral is determined to be phyllosilicate within the pyrosmalites due to the octahedral structure, with one perfect cleavage, a hardness of about 4.5, and a streak of light brown. (en)
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