Opaque Pyroxenic (Q137397549)
Dominated by opaque inclusions, with pyroxenes.
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Many fabrics have a range of abundances. The range maximum (top) and minimum (bottom) are shown.
** Has full slide image available.
| None (0) | Minor (1) | Few (2) | Common (3) | Frequent (4) | Major (5) | Very Dominant (6) |
| 0% | 0-5% | 5-15% | 15-30 % | 30-50% | 50-70% | 70-100% |
| Name | Cal. | Quartz | Feldspar | Pyroxene | Amphibole | Opaques | Olivine | Biotite | Muscovite | Epidote | Garnet/ Spinel | Ig./Met. Rocks | Sed. Rocks | Grog | Lithics/ Region |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| tpr476 | 0 | 3 | 3 | 3 | 1 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | chert |
| Moresby pyroxenic | 0 | 1 | 1 | 3 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | PNG |
| tpr488 | 0 | 0 | 2 | 5 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | vitric, microlitic |
| Exotic Lakeba pyroxene opaque | 0 | 0 | 0 | 3 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | Fiji |
| tpr104 | 1 | 0 | 1 | 5 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | na |
| New Ireland pyroxenic placer | 0 | 0 | 1 | 5 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | Bismarck |
| tpr441 | 0 | 0 | 1 | 5 | 0 | 5 | 1 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | microlitic |
| Marquesan beach placer | 0 | 0 | 1 | 4 | 0 | 4 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | Marquesa |
| tpr266 ** | 0 | 0 | 1 | 4 | 1 | 6 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | felsitic, vitric, microlitic, microphaneritic |
| Malakula opaque-rich | 0 | 0 | 0 | 2 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | Vanuatu |
| tpr194 ** | 2 | 1 | 1 | 4 | 0 | 6 | 1 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | vitric, microlitic |
| Arawe placer | 0 | 0 | 1 | 2 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | Bismarck |
| tpr318 ** | 2 | 0 | 2 | 5 | 1 | 6 | 1 | 1 | 0 | 0 | 0 | 3 | 0 | 0 | lathwork, microlitic |
| Tanga pyroxene opaque placer | 0 | 0 | 1 | 3 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | Bismarck |
| tpr485 | 0 | 1 | 2 | 3 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | na |
| Madang placer | 0 | 1 | 2 | 3 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | PNG |
| tpr427 | 1 | 0 | 1 | 3 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | na |
| Haapi opaque | 1 | 0 | 1 | 3 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | Tonga |
| tpr319 | 0 | 0 | 1 | 2 | 0 | 6 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | lathwork, microlitic |
| Tanga opaque placer | 0 | 0 | 0 | 2 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | Bismarck |
| tpr156 | 0 | 0 | 1 | 3 | 1 | 6 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | na |
| Tetepare opaque-rich | 0 | 0 | 1 | 3 | 1 | 6 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | Solomons |
| tpr359 | 0 | 0 | 3 | 2 | 1 | 4 | 0 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | vitric |
| Exotic Karobo placer | 0 | 0 | 3 | 2 | 1 | 4 | 0 | 1 | 0 | 0 | 0 | 2 | 0 | 0 | Fiji |
| tpr379a | 0 | 0 | 2 | 2 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | microlitic, felsitic, vitric |
| Vava'u opaque | 0 | 0 | 2 | 2 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | Tonga |
| tpr229 ** | 0 | 0 | 3 | 3 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | vitric, microlitic, felsitic |
| Efate opaque-rich placer | 0 | 0 | 1 | 2 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | Vanuatu |
| Slide | Fabric | Possible Origin | Cal. | Quartz | Feldspar | Pyroxene | Amphibole | Opaques | Olivine | Biotite | Muscovite | Epidote | Garnet/ Spinel | Ig./Met. Rocks | Sed. Rocks | Grog | Lithics |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WD_31_17 | tpr104 (New Ireland pyroxenic placer) | New Ireland | 1 | 0 | 1 | 5 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | na |
| WD_31_19 | tpr104 (New Ireland pyroxenic placer) | New Ireland | 0 | 0 | 1 | 5 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | na |
| WD_40_16 | tpr156 (Tetepare opaque-rich) | ? | 0 | 0 | 1 | 3 | 1 | 6 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | na |
| WD_41_11 | tpr194 (Arawe placer) | New Britain | 1 | 0 | 1 | 4 | 0 | 5 | 1 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | vitric, microlitic |
| WD_41_13 | tpr194 (Arawe placer) | New Britain | 2 | 0 | 0 | 3 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | vitric, microlitic |
| WD_45_12 | tpr229 (Efate opaque-rich placer) | Efate | 0 | 0 | 2 | 3 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | vitric |
| WD_45_11 | tpr229 (Efate opaque-rich placer) | Efate | 0 | 0 | 2 | 2 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | vitric |
| WD_45_13 | tpr229 (Efate opaque-rich placer) | Efate | 0 | 0 | 4 | 3 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | vitric |
| WD_45_14 | tpr229 (Efate opaque-rich placer) | Efate | 0 | 0 | 3 | 3 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | vitric |
| WD_45_15 | tpr229 (Efate opaque-rich placer) | Efate | 0 | 0 | 2 | 3 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | vitric |
| WD_45_23 | tpr229 (Efate opaque-rich placer) | Efate | 0 | 0 | 1 | 2 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | vitric |
| WD_46_10 | tpr229 (Efate opaque-rich placer) | Efate | 0 | 0 | 1 | 3 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | vitric |
| WD_46_13 | tpr229 (Efate opaque-rich placer) | Efate | 0 | 0 | 2 | 3 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | vitric, microlitic, felsitic |
| WD_46_22 | tpr229 (Efate opaque-rich placer) | Efate | 0 | 0 | 2 | 3 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | vitric, microlitic, felsitic |
| WD_46_23 | tpr229 (Efate opaque-rich placer) | Efate | 0 | 0 | 3 | 2 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | vitric, microlitic, felsitic |
| WD_46_24 | tpr229 (Efate opaque-rich placer) | Efate | 0 | 0 | 3 | 3 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | vitric, microlitic, felsitic |
| WD_46_25 | tpr229 (Efate opaque-rich placer) | Efate | 0 | 0 | 4 | 3 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | vitric, microlitic, felsitic |
| WD_50_23 | tpr266 (Malakula opaque-rich) | Malakula | 0 | 0 | 0 | 3 | 1 | 6 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | felsitic, vitric, microlitic, microphaneritic |
| ML_1_3 | tpr266 (Malakula opaque-rich) | Malakula | 0 | 0 | 1 | 3 | 1 | 6 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | felsitic, microphaneritic, microlitic |
| ML_1_2 | tpr266 (Malakula opaque-rich) | Malakula | 0 | 0 | 0 | 4 | 1 | 5 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | felsitic |
| WD_30_7 | tpr318 (Tanga pyroxene opaque placer) | Tanga not Boeng | 0 | 0 | 1 | 5 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | lathwork, microlitic |
| WD_30_12 | tpr318 (Tanga pyroxene opaque placer) | Tanga | 0 | 0 | 1 | 4 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | lathwork, microlitic |
| WD_30_8 | tpr318 (Tanga pyroxene opaque placer) | Tanga | 0 | 0 | 1 | 3 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | lathwork, microlitic |
| WD_30_4 | tpr318 (Tanga pyroxene opaque placer) | Tanga | 0 | 0 | 2 | 3 | 1 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | lathwork, microlitic |
| WD_30_13 | tpr318 (Tanga pyroxene opaque placer) | Tanga | 0 | 0 | 1 | 4 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | microlitic, lathwork |
| WD_30_6 | tpr318 (Tanga pyroxene opaque placer) | Tanga | 0 | 0 | 1 | 5 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | microlitic, lathwork |
| WD_30_9 | tpr318 (Tanga pyroxene opaque placer) | Tanga | 0 | 0 | 1 | 4 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | microlitic, lathwork |
| WD_30_16 | tpr318 (Tanga pyroxene opaque placer) | Tanga | 2 | 0 | 1 | 3 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | na |
| WD_30_14 | tpr319 (Tanga opaque placer) | Tanga | 0 | 0 | 1 | 2 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | lathwork, microlitic |
| WD_66_24 | tpr359 (Exotic Karobo placer) | Viti Levu | 0 | 0 | 3 | 2 | 1 | 4 | 0 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | vitric |
| WD_73_5 | tpr427 (Haapi opaque) | Ha'apai | 1 | 0 | 1 | 3 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | microlitic, vitric |
| IL_1_37 | tpr485 (Madang placer) | Madang | 0 | 1 | 2 | 3 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | na |
| SB_6_34 | tpr488 (Exotic Lakeba pyroxene opaque) | Unknown, Northern Lau? | 0 | 0 | 0 | 5 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | na |
| WD_71_14 | tpr379a (Vava'u opaque) | Vava'u | 0 | 0 | 2 | 2 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | microlitic, felsitic, vitric |
Well sorted, fine- to medium-grained placer beach sand, wholly lacking in hornblende, but rich in clinopyroxene and opaque iron oxides.
Well sorted, fine- to medium-grained placer beach sand, wholly lacking in hornblende, but rich in clinopyroxene and opaque iron oxides.
Volcanic placer with opaques.
Moderately to well sorted, fine- to medium-grained, subrounded placer beach sands rich in opaque iron oxide grains of high specific gravity and containing minor admixtures of calcareous reef detritus. Has orthopyroxene in addition to clinopyroxene.
Moderately to well sorted, fine- to medium-grained, subrounded placer beach sands rich in opaque iron oxide grains of high specific gravity and containing minor admixtures of calcareous reef detritus. Has orthopyroxene in addition to clinopyroxene.
Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.
Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.
Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.
Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.
Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.
Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.
Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.
Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.
Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.
Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.
Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.
Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.
Opaque rich placer.
Volcanic opaque-rich placer sand. Lapita sherd.
Volcanic placer. Medium opaque inclusions. Lapita sherd.
Matampul. Mixed pyroxene/opaque iron oxide ferromagnesian placer sand temper.
Salkangkinit. Mixed pyroxene/opaque iron oxide ferromagnesian placer sand temper.
Angkikita. Mixed pyroxene/opaque iron oxide ferromagnesian placer sand temper.
Nonu. Mixed pyroxene/opaque iron oxide ferromagnesian placer sand temper.
Matangkipit. Mixed pyroxene/opaque iron oxide ferromagnesian placer sand temper.
Amfuli. Mixed pyroxene/opaque iron oxide ferromagnesian placer sand temper.
Ansingsing. Mixed pyroxene/opaque iron oxide ferromagnesian placer sand temper.
Matangkipit. Mixed pyroxene/opaque iron oxide ferromagnesian placer sand temper.
Angkikita. Opaque iron oxide-rich ferromagnesian placer sand temper.
Possibly from Navua.
Lapita sherd.
Madang style. CAUTION: Section less than 30microns. This sherd is characterized by angular to subrounded magnetite grains (5%) less than 0.2 mm in length. Pyroxene grains (1%) are less than 0.2 mm in length. Plagioclase grains (<1%) are generally less than 0.2 mm in length. But there are rare grains of quartz and feldspar up to 1 mm across. There are also trace amounts of red ferruginized grains and rare shell in the red clay.
Maybe from Northern Lau.
Plain. Opaque.