PROGRAMA GEOLOGIA DO BRASIL Contrato CPRM- UFPA Nº

Continuação
Fácies Petrográficas Granitos portadores de Biotita ± Anfibólio (PPY3bb e PPY3Mub)
Variedades Petrográficas Biotita-monzogranitos Biotita-anfibólio-sienogranitos
Amostra / Mineral ADR-41A ADR-45B ADR-69 CREMU-141F CREMU-30A GDR-2E* GDR-7* KM-115 KM-70B KY-114 Média CREMU-28 CREMU-57A KM-32 Média
Quartzo 33.3 36.6 40.1 32.3 41.2 38.2 31.6 27.9 31.9 31.2 34.43 27.8 31.6 32.4 30.60
Plagioclásio 33.6 22.3 22.8 21.8 21.7 33 31.8 28.8 27.2 33.5 27.65 14.7 18.9 13.8 15.80
Microclínio 26.3 31.8 31.9 40.4 34.8 21 29 37.6 35.1 28.6 31.65 39.8 42.8 47.6 43.40
Biotita 3.9 4.5 2 2.6 8.4 2.9 4.7 4.1 3.3 5.1 4.15 12.4 3.3 2.3 6.00
Anfibólio 0.00 1 0.7 1.1 0.93
Clorita 0.6 2.2 3 0.4 1 0.8 0.4 0.6 0.90 0.5 1.3 0.8 0.87
Opacos 0.6 2 1.2 0.4 1.8 0.2 0.6 0.6 0.8 0.82 2.3 0.4 1.8 1.50
Titanita 0.6 0.2 0.6 0.4 0.4 0.1 1.2 0.1 0.36 0.8 0.27
Allanita 0.5 0.2 0.3 0.10 0.1 0.03
Fluorita 0.8 0.08 0.1 0.03
Apatita 0.1 0.4 0.05 0.7 0.4 0.37
Acessórios 0.1 0.2 0.1 0.4 0.2 0.1 0.11 0.4 0.4 0.27
Clinopiroxênio 0.00 0.00
Muscovita 0.9 1.4 0.23 0.00
Máficos 5.70 8.90 5.00 5.30 10.20 5.50 5.50 5.50 5.70 6.00 6.33 17.00 5.80 6.00 9.60
A+P 66.9 58.9 62.9 54.1 62.9 71.2 63.4 56.7 59.1 64.7 62.08 42.5 50.5 46.2 46.40
Microclínio* 28.22 35.06 33.65 42.75 35.62 22.78 31.39 39.87 37.26 30.65 33.72 48.36 45.87 50.75 48.33
Quartzo* 35.73 40.35 42.30 34.18 42.17 41.43 34.20 29.59 33.86 33.44 36.73 33.78 33.87 34.54 34.06
Plagioclásio* 36.05 24.59 24.05 23.07 22.21 35.79 34.42 30.54 28.87 35.91 29.55 17.86 20.26 14.71 17.61
*_ Amostras do Granito Marajoara (PP3Yma)
Programa Geologia do Brasil – Folha Marajoara
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