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ability to transmit light aka diaphaneity ;

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ability to transmit light aka diaphaneity ;

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malachite's ability to transmit light varies from translucent, to sub translucent, to completely opaque.

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malachite is one of few green minerals that produce effervescence in contact with cold, dilute hydrochloric acid, and produces a green liquid due to the reaction.

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malachite is of a brittle tenacity.

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malachite has flat surfaces fractured in an uneven pattern.

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when researching, i came to the conclusion that malachite has a low field uniform magnetization.

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malachite simply has a streak of light green.

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malachite has a hardness of 3.5 - 4, similar to(?) a copper penny, or fluorite.

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malachite has a perfect cleavage of {201}, which is defined as the tendency of a crystalline substance to break into fragments bounded by plane surfaces. malachite having a perfect cleavage causes smooth, lustrous surfaces with "great ease".

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malachite has a silky, earthy luster, vitreous, adamantine, and dull are other words used to describe its shine.

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malachite is bright and green, with crystals of deeper green shades than nearly reach black; from green to yellowish green in transmitted light.

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quite beautiful, huh?