Bowen’s Reaction Series
An Interactive Poster
P1-01
Biotite granite
P1-06
Coarse grained pink granite
grey and pink-orange; 15% quartz; 80% K-feldspar; 5% chloritic hornblende as fine crystals (some euhedral) and small masses; rare magnetite specks
P4-06
Muscovite
6cm wide muscovite sheets
P1-12
No data
P6-11
Feldspar porphyritic quartz monzonite
black and white; medium grained; 15% white K-feldspar phenocrysts to 2 cm; 20% quartz (eyes?) to 7 mm; 50% granular, crumbly 2-feldspar groundmass; 15% hornblende to 3 mm and biotite; magnetite associated with mafics; minor epidote in some feldspar phenos
P1-10
No Data
P7-10
Biotite granite aplite
stained for K-feldspar. Salt and pepper, fine grained, 50% white k-feldspar, 15% plagioclase, 25% quartz, 10% biotite, with rounded mafic xenolith.
P6-08
Biotite hornblende quartz monzonite
black and white; medium grained; 20% quartz; 20% plagioclase; 35% K-feldspar; 25% predominant hornblende to 5 mm and minor biotite; moderately magnetic; feldspars occur mainly as fine groundmass and are hard to distinguish except for occassional larger crystals
P6-05
Biotite hornblende granodiorite
black and white; medium grained; 30% quartz; 35% plagioclase; 10% K-feldspar; 25% predominant hornblende to 6 mm and minor biotite; mafics are moderately magnetic
P1-14
No data
P1-20
No data
P7-09
Alkali feldspar megacrystic quartz syenite
stained for K-feldspar; 45% k-feldspar phenos up to 2.5cm long, white with faint zonation, 15% plagioclase, 20% quartz, 10% hornblende, 10% biotite, trace fine grained, honey-colour sphene,
P1-05
Hornblende granodiorite
white to grey, medium grained; 20% quartz; 45% plagioclase; 10% K-feldspar; 25% weakly chloritic hornblende; composition from poor sodium cobaltinitrite stain (yellow K-spar); moderately magnetic. One narrow apple green epidote veinlet with 0.5 cm halo of weak potassic? alteration.
P7-06
Biotite hornblende granodiorite
Salt and pepper, medium grained with 20% white k-spar, 30% white plagioclase, 30% translucent grey quartz, 10% biotite, 10% hornblende.
P7-08
Biotite hornblende quartz syenite
stained for K-feldspar, salt and pepper, medium grained, weakly foliated, 50% k-spar, 15% plagioclase, 15% quartz, 10% biotite, 10% hornblende.
P7-04
Biotite granite aplite
Very fine grained grey with 49% quartz, 50% white feldspar, 1% biotite.
P7-04
Biotite granite aplite
Very fine grained grey with 49% quartz, 50% white feldspar, 1% biotite.
P5-02
Biotite hornblende granodiorite
medium grained; 20% K-feldspar to 5 mm; 50% plagioclase to 4 mm; 10% quartz; 20% mafics (biotite to 5 mm and hornblende? Minor disseminated magnetite and cpy
P1-11
No data
P1-17
No data
P4-05
Hornblende-feldspar pegmatite
60% euhedral hornblende; 40% interstitial plagioclase; associated with alkaline plutons in Nicola volcanics
P1-16
No data
P7-05
Biotite hornblende granodiorite
Salt and pepper, medium grained with 20% k-spar, 30% plagioclase, 30% quartz, 15% biotite, 5% hornblend.
P8-06
Syenodiorite or syenogabbro
60% plagioclase laths, elongate and oriented; 30% interstitial augite(?); 10% fine, interstitial K-feldspar (stained surface)
No data
No data
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