PROGRAMA GEOLOGIA DO BRASIL Contrato CPRM- UFPA Nº
PROGRAMA GEOLOGIA DO BRASIL Contrato CPRM- UFPA Nº
PROGRAMA GEOLOGIA DO BRASIL Contrato CPRM- UFPA Nº
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Tabela 3.5: Análises modais de rochas do Granodiorito Rio Maria da Folha Marajoara.<br />
Variedades Petrográficas EpHbBt/EpBtHbQzD Ep-Hb-Bt-Granodiorito Ep-Bt-Hb-Gd<br />
Amostra / Mineral MAR-20A MAR-78A Média F-10 F-10B F-66 F-66A F-66D F-9A MAR-134 MAR-145 MAR-29A MAR-54A MAR-92A Média MAR-137 MAR-86A Média<br />
Quartzo 12.70 14.10 13.40 24.95 20.69 18.60 25.07 19.18 19.79 23.50 22.90 22.60 14.10 15.80 20.65 30.30 29.60 29.95<br />
Microclínio 5.20 3.70 4.45 10.76 19.79 14.34 15.35 19.60 10.86 16.30 15.10 7.30 6.40 5.90 12.88 20.00 19.70 19.85<br />
Plagioclásio 54.30 54.10 54.20 45.17 42.31 37.51 39.90 43.94 52.72 44.80 45.80 48.30 51.10 47.50 45.37 42.00 41.20 41.60<br />
Anfibólio 22.60 9.30 15.95 9.70 12.15 19.43 14.02 9.71 8.53 8.70 9.40 10.90 22.30 20.30 13.19 0.90 0.40 0.65<br />
Biotita 1.50 13.50 7.50 3.92 2.64 6.45 2.41 7.30 7.44 4.50 5.10 6.30 1.90 0.50 4.41 5.50 5.20 5.35<br />
Epidoto 2.10 3.70 2.90 1.06 0.87 1.43 2.12 0.19 0.07 0.30 0.70 3.70 2.00 7.10 1.78 Tr 3.00 1.50<br />
Clorita Tr Tr 0.00 1.65 1.20 1.04 1.11 0.22 Tr Tr Tr Tr Tr 0.47 Tr Tr 0.00<br />
Opacos 1.00 0.10 0.55 2.80 0.37 1.04 0.02 0.08 0.33 0.80 0.70 Tr 0.90 0.80 0.71 1.10 Tr 0.55<br />
Apatita 0.80 0.30 0.55 Tr Tr Tr Tr Tr Tr 0.10 0.10 0.10 0.90 0.30 0.14 0.10 Tr 0.05<br />
Titanita 0.80 0.70 0.75 Tr Tr Tr Tr Tr Tr 0.30 0.20 0.20 0.90 1.30 0.26 0.10 0.60 0.35<br />
Acessórios Tr Tr Tr Tr Tr Tr Tr Tr Tr Tr Tr Tr Tr Tr Tr Tr Tr Tr<br />
Máficos 28.00 27.30 27.65 19.13 17.23 29.39 19.68 17.28 16.59 14.60 16.10 21.10 28.00 30.00 20.83 7.60 9.20 8.40<br />
A+P 59.50 57.80 58.65 55.93 62.10 51.85 55.25 63.54 63.58 61.10 60.90 55.60 57.50 53.40 58.25 62.00 60.90 61.45<br />
Microclínio* 7.20 5.15 6.17 13.30 23.90 20.35 19.11 23.69 13.03 19.27 18.02 9.34 8.94 8.53 16.13 21.67 21.77 21.72<br />
Quartzo* 17.59 19.61 18.60 30.85 24.99 26.40 31.21 23.19 23.74 27.78 27.33 28.90 19.69 22.83 26.08 32.83 32.71 32.77<br />
Plagioclásio* 75.21 75.24 75.23 55.85 51.11 53.24 49.68 53.12 63.24 52.96 54.65 61.76 71.37 68.64 57.78 45.50 45.52 45.51<br />
Abreviações: A – Álcali-feldspato; P – Plagioclásio; Ep – epidoto; Hb-hornblenda; Bt-biotita; Gd - granodiorito; QzD - quartzo-diorito; * recalculado a 100%.<br />
Programa Geologia do Brasil – Folha Marajoara<br />
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