TEMPER GROUP TOTAL %
plg-vrf/cpx-hbl 25 67.6 calc 6 16.2 calc-op-plg 1 2.7 op-rich placer 3 8.1 cpx-rich placer 1 2.7 cpx-op-plg 1 2.7 Total 37 100.0
Table 5.25 EAA – Lossu: SEM-EDXA mineral analyses & identifications from a sample of diagnostic sherds Sherd-
Sample No.
Na2O MgO Al2O3 SiO2 P2O5 K2O CaO TiO2 MnO FeO Mineral Temper Group
EAA12-1 6.52 0.05 26.11 57.39 -0.06 0.21 8.51 -0.15 0.05 0.11 andesine plg-vrf/cpx-hbl EAA12-2 5.73 0.25 20.03 61.11 0.18 5.46 2.09 0.16 0.12 2.56 anorthoclase plg-vrf/cpx-hbl EAA12-3 0.06 1.22 1.75 0.08 0.12 0.06 -0.05 10.51 0.13 76.03 titanian magnetite plg-vrf/cpx-hbl EAA13-1 8.27 0.01 23.58 61.71 -0.07 0.75 5.33 0.03 -0.10 0.43 oligoclase plg-vrf/cpx-hbl EAA13-2 0.19 0.27 1.79 0.19 0.03 0.02 0.10 3.75 1.05 85.48 titanian magnetite plg-vrf/cpx-hbl EAA13-3 2.45 13.16 13.28 40.63 0.06 1.14 12.37 1.84 0.13 12.81 pargasite (or magnesio-
hastingsite)*
plg-vrf/cpx-hbl
EAA13-4 0.01 16.08 16.13 35.10 0.07 5.41 0.33 4.29 0.25 11.04 biotite plg-vrf/cpx-hbl EAA15-1 0.28 13.37 5.08 49.85 0.08 0.02 23.87 0.77 0.22 7.14 augite cpx-op-plg EAA15-2 0.12 2.41 3.21 0.26 -0.08 0.02 -0.02 4.81 1.18 82.19 titanian magnetite cpx-op-plg EAA16-1^ 8.48 -0.06 21.65 63.81 -0.34 1.21 2.85 0.06 0.21 0.20 oligoclase plg-vrf/cpx-hbl EAA16-2 1.87 13.66 12.29 40.35 -0.16 1.40 11.75 1.82 -0.12 11.11 pargasite (or magnesio-
hastingsite)
plg-vrf/cpx-hbl
EAA16-3 0.33 0.12 18.44 63.55 -0.40 15.86 -0.14 -0.15 -0.08 0.29 orthoclase plg-vrf/cpx-hbl EAA16-4 -0.04 0.55 1.13 0.26 0.11 0.08 -0.06 4.98 1.89 80.56 titanian magnetite plg-vrf/cpx-hbl EAA16-9 7.14 -0.15 18.27 65.85 -0.33 5.92 0.07 0.09 0.06 0.53 anorthoclase plg-vrf/cpx-hbl EAA17-1 6.80 -0.01 26.13 58.25 -0.15 0.24 8.28 -0.03 0.05 0.33 andesine plg-vrf/cpx-hbl EAA17-2 1.66 14.77 8.91 46.07 -0.10 0.16 11.25 1.62 0.32 12.39 edenite (or
ferrihornblende)*
plg-vrf/cpx-hbl
EAA17-3 0.02 0.16 27.33 36.77 2.88 0.21 3.41 0.02 0.06 2.26 clay? plg-vrf/cpx-hbl EAA17-4 5.03 0.01 28.14 53.63 -0.17 0.42 11.29 0.06 -0.05 0.68 labradorite plg-vrf/cpx-hbl EAA18-1^ 0.40 13.49 5.14 49.69 0.13 0.05 22.38 0.88 0.11 8.10 augite* cpx-rich placer EAA18-2 0.08 3.59 6.62 0.25 0.00 0.00 0.03 7.50 0.25 74.71 titanian magnetite cpx-rich placer EAA19-1 0.01 2.69 0.46 0.40 -0.05 -0.07 49.07 -0.10 0.14 0.02 calcareous grain calc EAA19-2 -0.03 0.19 0.60 0.36 -0.36 -0.02 51.63 -0.06 -0.06 0.27 calcareous grain calc
NB:
* = mineral identified by Andy Christy (EMS, ANU) ^ = sherd analysed petrograhically by Bill Dickinson (UA)
Table 5.26 New Ireland: Comparison of augite phenocrysts (SEM-EDXA data) in temper groups from Lasigi (Dori &
Mission) & Lossu
TEMPER GROUP NA2O MGO AL2O3 SIO2 K2O CAO TIO2 MNO FEO
DORI & MISSION
cpx-rich 0.21 14.02 4.08 50.66 0.04 22.61 0.56 0.22 7.81 (0.18) (0.83) (0.57) (0.86) (0.03) (0.63) (0.21) (0.05) (1.43) plg-cpx/vrf-hbl 0.32 14.29 3.77 50.81 0.03 23.07 0.62 0.16 7.74 (0.05) (0.24) (0.62) (0.93) (0.02) (0.79) (0.20) (0.14) (1.28) LOSSU cpx-op-plg (EAA15) 0.28 13.37 5.08 49.85 0.02 23.87 0.77 0.22 7.14 cpx-rich (EAA18) 0.40 13.49 5.14 49.69 0.05 22.38 0.88 0.11 8.10
NB: Values are average wt% oxide data (& standard deviation)
Table 5.27 EAA – Lossu: Percentage TiO
2in titanian magnetite in a sample of sherds
TITANIAN MAGNETITE %TIO2 TEMPER SHERD plg-vrf/cpx-hbl EAA13 3.75 EAA16 4.98 EAA12/Lossu A 10.51 cpx-rich EAA18 7.50 cpx-op-plg EAA15 4.81
Table 5.28 ENX – Fissoa: Temper groups identified in the ceramic assemblage of Pits 2 & 3
CODE TEMPER GROUP
calc Calcareous beach sand—dominant reef detritus, occ. w/ minor, scattered felsic grains
calc-cpx-vrf-plg1 Hybrid calcareous-pyroxenic-lithic beach placer—dominant calcareous grains (40%, reef
detritus), w/ subordinate clinopyroxene (21%, augite), vitric-rich volcanic rock fragments (16%; vitric [10%], microlitic [4%], felsitic [2%]) & plagioclase (14%), w/ minor opaques (7%, titanian magnetite) & hornblende (3%, green-brown)
calc-plg-op Hybrid calcareous-feldspathic beach placer—dominant calcareous grains (reef detritus), w/
minor feldspathic & ferromagnesian minerals (NB: some sherds w/ minor calcareous grains only)
plg-rich w/ vrf-hbl Feldspathic-rich, lithic-hornblendic beach sand—dominant plagioclase & other felsic minerals
(72%, incl. andesine & quartz), w/ subordinate volcanic rock fragments (12%, incl. vitric, felsitic & microlitic) & hornblende (11%), & minor opaques (5%, titanian & Ti- rich magnetite)
(NB: no clinopyroxene)
plg-rich w/ biot Feldspathic-rich, lithic stream sand with biotite—dominant plagioclase (83%, incl. oligoclase),
w/ subordinate volcanic rock fragments (11%; vitric [7%], microlitic [2%], felsitic [2%]), & minor opaques (3%), biotite (1%), clinopyroxene (1%) & hornblende (1%) (NB: minor calcareous grains present in ENX120)
plg-rich w/ qtz & opx Feldspathic-rich beach sand—dominant plagioclase w/ subordinate quartz & orthopyroxene,
volcanic rock fragments, & minor opaques
plg-rich w/ vrf Feldspathic-rich, lithic stream sand—dominant plagioclase (75%), w/ subordinate volcanic rock
fragments (15%; vitric [8%], felsitic [4%], microlitic [3%]), & minor opaques (5%), hornblende (4%), & clinopyroxene (1%)
plg-rich w/ felsitic-rich vrf Feldspathic-rich, felsitic-lithic stream sand—dominant plagioclase (68%), w/ subordinate
felsitic-rich volcanic rock fragments (22%; felsitic [10%], vitric [9%], microlitic [3%]), w/ minor clinopyroxene (5%), hornblende (4%), & opaques (1%)
plg-rich w/ vitric-rich vrf Feldspathic-rich, vitric-lithic stream sand—dominant plagioclase (65%, quartz also present),
w/ subordinate vitric-rich volcanic rock fragments (29%; vitric [16%], microlitic [8%], felsitic [5%]), w/ minor clinopyroxene (4%) & opaques (2%)
(NB: no hornblende)
plg-vrf rich Feldspathic-lithic stream sand—dominant plagioclase (51%, incl. labradorite) & volcanic rock
fragments (43%; vitric [16%], microlitic [14%], felsitic [13%]), w/ minor opaques (4%), clinopyroxene (1%), & hornblende (1%)
plg-cpx rich Feldspathic-pyroxenic beach placer—dominant plagioclase (39%) & clinopyroxene (37%), w/
subordinate volcanic rock fragments (14%; vitric [8%], felsitic [4%], & microlitic [2%]) & hornblende (9%), & minor opaques (1%)
cpx-rich w/ plg-vrf Pyroxenic-rich, feldspathic-lithic beach placer—dominant clinopyroxene (39%, augite), w/
subordinate plagioclase (27%, oligoclase) & vitric-rich volcanic rock fragments (14%), & minor opaques (6%), hornblende (4%), & felsitic (4%) & microlitic (3%) volcanic rock fragments
op-rich Opaque-rich beach placer—dominant opaques (titanian & Ti-rich magnetite), w/ minor feldspar
(incl. andesine) & calcareous grains (reef detritus)
vrf-cpx-plg Vitric-rich lithic, pyroxenic-felsic beach placer—dominant vitric (glassy) volcanic rock
fragments (26%), w/ slightly subordinate clinopyroxene (25%, augite) & plagioclase (23%), & minor opaques (9%, magnetite & titanian magnetite), hornblende (6%), & microlitic (7%) & felsitic (4%) rock fragments
Table 5.29 ENX – Fissoa: Representation of temper groups in plain & diagnostic sherds from Pits 2 & 3
TEMPER GROUP (B/S) PBS DIAG TOTAL % TYPE %
calc (B) 91 20 111 47.8 calcareous—47.8
calc-cpx-vrf-plg (B) 11 11 4.7 hybrid calcareous—8.1
calc-plg-op (B) 6 2 8 3.4 plg-rich w/ vrf-hbl (B) 33 2 35 15.1 feldspathic-rich—23.7 plg-rich w/ vrf (S) 8 3 11 4.7 plg-rich w/ biot (S) 4 1 5 2.2 plg-rich w/ vitric-rich vrf (S) 2 2 0.9 plg-rich w/ felsitic-rich vrf (S) 1 1 0.4
plg-rich w/ qtz & opx 1 1 0.4
plg-vrf rich (S) 30 30 12.9 feldspathic-lithic—12.9
plg-cpx rich (B) 1 1 0.4 feldspathic-pyroxenic—0.4
cpx-rich w/ plg-vrf (B) 8 8 3.4 clinopyroxene-rich—3.4
op-rich placer (B) 3 2 5 2.2 opaque-rich—2.2
vrf-cpx-plg (B) 3 3 1.3 lithic-pyroxenic-felsic—1.3
Total 202 30 232 99.8 99.8
Table 5.30 ENX – Fissoa: SEM-EDXA mineral analyses & identifications from a sample of plain body sherds Sherd-
Sample No.
Na2O MgO Al2O3 SiO2 P2O5 K2O CaO TiO2 Cr MnO FeO Mineral Temper Group
ENX113-6^ 0.08 2.21 4.19 0.32 0 0.04 0.12 7.70 0.07 0.8 73.08 titanian magnetite vrf-cpx-plg ENX113-7 0.48 12.87 5.92 49.42 0.07 -0.03 22.28 1.05 0.17 0.43 8.68 augite* vrf-cpx-plg ENX113-8 0.14 0.24 3.11 5.85 0.55 0.02 0.55 0.1 -0.03 0.39 70.98 magnetite vrf-cpx-plg ENX119-2 8.78 0.02 21.85 65.52 0.02 1.28 2.86 0.02 na 0.01 0.37 oligoclase cpx-rich w/ plg-vrf ENX119-7 0.62 13.44 5.06 50.41 0.09 0.03 22.6 0.64 na 0.44 8.23 augite cpx-rich w/ plg-vrf ENX119-8 0.13 0.54 15.06 9.95 1.44 0.01 1.9 1.05 na 0.31 52.31 Unid. (ferric oxide?) cpx-rich w/ plg-vrf ENX120-6 0.35 16.30 2.98 52.71 -0.05 -0.02 23.1 0.43 0.66 0.12 3.91 augite* plg-rich w/ biot ENX120-7 8.55 0.04 22.35 62.65 -0.03 0.64 3.82 -0.07 -0.03 0.04 0.34 oligoclase plg-rich w/ biot ENX120-8 0.33 12.69 5.73 47.12 -0.14 -0.01 21.56 1.02 0.11 0.19 8.46 augite plg-rich w/ biot ENX120-9 -0.03 0.02 0.66 0.52 -0.13 0.05 47.51 0.04 -0.1 0.03 0.26 calcareous grain plg-rich w/ biot ENX121-1 0.16 1.02 0.42 0.17 0.04 0.01 0.12 27.13 na 0.20 64.33 Ti-rich titanian magnetite op-rich placer ENX121-2 0.15 1.27 1.55 0.24 -0.01 -0.01 -0.01 8.66 na 0.25 74.98 titanian magnetite op-rich placer ENX121-3 6.04 -0.01 26.74 57.1 0.03 0.13 9.16 0.05 na 0.05 0.35 andesine op-rich placer ENX122-6 0.12 0.4 11.89 7.54 0.93 -0.06 1.31 0.75 na 0.08 56.34 Unid. (ferric oxide?) plg-rich w/ vitric-rich vrf ENX122-7 0.1 -0.06 0.46 100.5 0.13 -0.09 0.01 0.01 na -0.18 0.07 quartz plg-rich w/ vitric-rich vrf ENX123-6 0.06 22.03 0.37 52.60 -0.12 0.01 0.94 0.18 0.12 1.27 20.62 enstatite (orthopyroxene)* plg-rich w/ qtz & opx ENX123-7 0.03 -0.03 0.13 98.04 -0.09 -0.06 -0.03 0.02 0 -0.15 0.02 quartz plg-rich w/ qtz & opx ENX123-8 0.25 2.06 14.35 14.61 0.51 0.5 1.38 0.15 0.06 -0.12 50.01 Unid. (ferric oxide?) plg-rich w/ qtz & opx ENX124-5 6.32 0.02 25.82 57.37 0.01 0.14 8.56 0.03 na -0.07 0.48 andesine plg-rich w/ vrf-hbl ENX124-6 0.13 0.91 1.75 0.3 0.03 0.04 0.04 6.72 na 0.34 78.19 titanian magnetite plg-rich w/ vrf-hbl ENX124-7 0.12 1.28 0.26 0.33 0.04 0 -0.03 29.55 na 0.07 60.17 Ti-rich titanian magnetite plg-rich w/ vrf-hbl ENX125-6 -0.07 -0.08 0.09 0.1 -0.29 0.04 53.74 -0.01 -0.22 0.06 0.1 calcareous grain calc ENX125-7 0.13 2.7 0.83 0.31 -0.21 -0.07 0.33 6.72 0.15 0.4 76.3 titanian magnetite calc ENX126-4 0.14 1.61 2.25 0.15 -0.07 -0.02 0.09 6.75 na 0.40 79.49 titanian magnetite calc ENX130-6 0.2 0.85 24.68 5.51 0.52 0 0.32 1.09 na 0.18 48.15 Unid. (ferric oxide?) plg-vrf rich ENX130-7 4.22 0.05 28.42 52.26 -0.1 0.24 12.01 0.1 na 0 0.86 labradorite plg-vrf rich ENX132-6 0.05 1.59 0.64 0.21 -0.11 0 -0.02 12.46 -0.03 0.43 73.56 titanian magnetite calc-cpx-vrf-plg ENX132-7 0.49 14.62 2.64 50.78 0.1 0.03 21.02 0.76 -0.05 0.25 7.48 augite* calc-cpx-vrf-plg
NB:
* = mineral identified by Andy Christy (EMS, ANU) ^ = sherd analysed petrograhically by Bill Dickinson (UA) na = not assayed