1 research outputs found
Studi Mikroskopis Batuan dari Sungai Aranio Kalimantan Selatan dengan Metode Petrografi
Done observation petrography to detect colour, structure, texture,
mineral composition and rock classification. Rock sample that taken from Aranio
River, South Kalimantan as much as 4 (four) samples, made to be thin slice
measures 6 cm x 3 cm x 3 mm use rock clipper dan rock slice refiner. Rock
thin slice is analyzed by means of polarization microscope. Analysis result
petrography mentions that any sample amphibolites rocks (hornblende sekis)
that belong in faces metamorphic rock. Two samples among others textured
grano-lepidoblastic and poikiloblastic, while two textured another samples granolepidoblastic
and textured lepidoblastic and poikiloblastic. Crystal size from rock
samples amphibolites revolve from 0,40 mm until 0,80 mm, has lineation
structure (crystal instruction) and clear colour up to muddy greenness. This rock
principal mineral composition consists of amphibole (34 β 60 %), quartz (22 β 44
%), plagioclase (4 β 14 %), biotitic (1 %), epidotic (4 β 10 %), garnet (1 β 2 %),
cyanide (1 β 6 %) and pyroxene (2 %); addition mineral consists of oxide iron (1
β 3 %) and calcite (6%)