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Malahit

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Malahit Tue Dec 08, 2015 10:12 pm

Malahit   Malahit


Malahitul este un mineral carbonat, cunoscut sub denumirea de carbonat de cupru.

Istoric, legenda

Numele pietrei deriva din grecescul molochitis , "piatra verde-nalba". Malahitul era folosit ca pigment mineral in vopselele verzi din antichitate pana in anii 1800. Abia odata cu revolutia industriala au fost egalate nuantele deosebite pe care le prezenta aceasta piatra.
In mitologia greaca, tronul lui Demeter, zeita granelor si a recoltei, era facut din malahit. In antichitate malahitul era frecvent utilizat pentru bijuterii si alte ornamente deoarece era usor de prelucrat si putea fi supus unei polisari intense.

Calitate, valoare

Aspectul sau dungat si nuantele de verde inchis sunt unice, iar datorita lor piatra este una dintre cele mai usor recunoscute pietre de catre oameni. Culoarea mahalitului variaza de la verde deschis la verde inchis, nuanta fiind data de cuprul continut. Malahitul apare adeseori din alterarea minereurilor de cupru. Cu toate ca malahitul se gaseste peste tot in lume, cele mai importante surse sunt tarile africane Namibia si Zair.
In Palatul de Iarna din St. Petersburg se gaseste "Camera de Malahit".

Ingrijire
Malahitul are duritatea 3.5 - 4 pe scala Mohs. Malahitul este fragil si se poate zgaria usor.
Pentru a curata folositi un material textil extrem de moale, pentru a polisa.


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