Table 6.A3 – Major Element Analyses of Fine-to Medium-grained Granites, Quartz Syenite and Feldsparphyric Rhyolite

Element Fine-to Medium-
Grained Granite
-
Shouson Hill
(3708 1261)
-
HK 3614		 Fine-to Medium-
Grained Granite
-
Kwun Tong
(4288 1947)
-
HK 2185		 Fine-grained Granite
-
Mount Butler Quarry
(3910 1440)
-
HK 214		 Fine-grained Granite
-
Kwun Tong
(4284 1953)
-
HK 2184		 Fine-grained Granite
-
Sok Kwu Wan
(3154 0845)
-
HK 4806		 Quartz Syenite
-
Wong Chuk Hang
(3476 1225)
-
HK 3552		 Quartz Syenite
-
Shouson Hill
(3693 1283)
-
HK 3553		 Quartz Syenite
-
Ap Lei Chau
(3333 1175)
-
HK 3636		 Feldsparphyric Rhyolite
-
Lai King
(3142 2367)
-
HK 2182
SiO2 76.51 76.56 75.49 75.26 77.29 59.06 58.74 65.74 73.91
TiO2 0.10 0.02 0.03 0.02 0.04 0.46 0.60 0.33 0.19
Al2O3 11.86 12.41 12.52 12.45 12.51 19.17 18.67 16.74 12.63
Fe2O3 0.45 0.10 0.24 0.22 0.26 1.32 1.77 0.73 0.60
FeO 0.89 0.86 0.69 0.65 0.88 2.36 2.91 2.02 1.39
MnO 0.05 0.09 0.05 0.08 0.11 0.10 0.14 0.12 0.08
MgO 0.10 0.02 0.03 0.02 0.01 1.02 1.40 0.33 0.17
CaO 1.02 0.55 0.45 0.45 0.58 3.97 4.36 1.40 0.63
Na2O 3.10 3.89 3.95 3.82 3.15 3.25 3.27 3.98 3.05
K2O 5.02 4.55 4.52 4.82 5.06 7.55 6.80 7.55 5.39
H2O+ 0.56 0.28 0.46 0.31 0.47 1.02 1.12 0.96 0.97
H2O- 0.06 0.14 0.08 0.17 0.01 0.00 0.04 0.20 0.23
P2O5 0.00 <0.01 <0.01 <0.01 0.01 0.25 0.31 0.07 0.04
Total 99.72 99.47 98.51 98.27 100.38 99.53 100.13 100.17 99.28