{"id":693,"date":"2025-04-08T12:27:43","date_gmt":"2025-04-08T15:27:43","guid":{"rendered":"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/?p=693"},"modified":"2025-05-22T17:09:28","modified_gmt":"2025-05-22T20:09:28","slug":"calcedonia","status":"publish","type":"post","link":"https:\/\/laboratorios.ufrrj.br\/mineraiserochas\/calcedonia\/","title":{"rendered":"Calced\u00f4nia"},"content":{"rendered":"\n

\u00c9 uma variedade criptocristalina do quartzo<\/p>\n\n\n\n

Composi\u00e7\u00e3o Qu\u00edmica: SiO2<\/sub><\/p>\n\n\n\n

Brilho: graxo<\/p>\n\n\n\n

Dureza (Mohs): 7<\/p>\n\n\n\n

Densidade relativa: 2,65<\/p>\n\n\n\n

Clivagem: Pobre, indistinta<\/p>\n\n\n\n

Fratura: Conchoidal<\/p>\n\n\n\n

\"\"<\/a>
Calcedonia. Cole\u00e7\u00e3o Simon Bumistrov. UFRRJ<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

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