36:
613:
219:
Olivine basalt is commonly used by foundries, boilermakers and boiler users to protect the area around a burner tip or to protect a floor from molten metal and other slag. Its use in this fashion is appropriate since olivine is a highly refractory, high-melting-temperature mineral.
122:
More generally the classification of fine grained rocks recognises a group known as 'picritic rocks' that are characterised by high magnesium content and less than 45% SiO2. Having high Mg content they fit in the
130:
Picrites and komatiites are somewhat similar chemically (defined as >18% MgO), but differ in having 1 to 2% total alkalis and <1% total alkalis respectively.
256:"Volatiles: Mantle Source Characterization and Degassing Process for Hot Spot Volcanism - The Piton de la Fournaise (Reunion Island) Example"
649:
293:
92:
or in a caldera lava lake. The compositions of these rocks are well represented by mixes of olivine and more typical tholeiitic basalt.
142:. In contrast, picrites are magnesium-rich because crystals of olivine have accumulated in more normal melts by magmatic processes.
426:
255:
351:
Wilkinson, J. F. G.; Hensel, H. D. (1988). "The petrology of some picrites from Mauna Loa and
Kilauea volcanoes, Hawaii".
517:
336:
1656:
397:
203:
is a variety of picritic basalt characterized by its large amounts of olivine phenocrysts and lesser amounts of
1646:
702:
682:
642:
512:
1127:
127:
system only at the lowest levels of Si02 and Na2O + K2O. They include picrite, komatiite and meimechite.
1092:
267:
185:
166:
40:
1661:
1651:
419:
360:
234:
460:
1377:
923:
635:
376:
124:
35:
878:
170:
77:
297:
1575:
1287:
1074:
943:
368:
85:
1666:
1387:
1147:
1000:
481:
455:
412:
280:
208:
135:
364:
1580:
1422:
1015:
938:
617:
27:
207:
and by having a groundmass of olivine, plagioclase and augite. The term was coined by
1640:
1625:
1540:
1505:
1352:
913:
818:
522:
380:
96:
89:
1550:
1530:
1402:
1049:
1027:
968:
868:
813:
798:
664:
612:
593:
527:
465:
450:
259:
1439:
1330:
1310:
1300:
1227:
1177:
1102:
948:
883:
853:
808:
766:
739:
734:
724:
687:
568:
242:
108:
134:
lavas are products of more magnesium-rich melts, and good examples exhibit the
26:"Picrite" redirects here. For the component of triple-base NQ propellants, see
1605:
1590:
1565:
1560:
1470:
1455:
1372:
1340:
1305:
1295:
1277:
1257:
1202:
1182:
1137:
1059:
1044:
1020:
980:
953:
933:
903:
863:
838:
828:
823:
803:
712:
162:
100:
88:
are the result of accumulation of olivine crystals either in a portion of the
81:
62:
1620:
1610:
1600:
1585:
1555:
1535:
1520:
1515:
1480:
1475:
1434:
1427:
1392:
1362:
1347:
1325:
1267:
1247:
1242:
1232:
1217:
1197:
1172:
1167:
1162:
1152:
1142:
1117:
1082:
995:
963:
908:
898:
873:
848:
843:
783:
744:
707:
598:
578:
573:
537:
324:
178:
154:
150:
131:
181:
during the eruptions of 1852 and 1868 (from different flanks of Mauna Loa).
192:
In addition to extrusive occurrences, it also occurs in minor intrusions.
1595:
1570:
1495:
1465:
1460:
1382:
1367:
1335:
1315:
1212:
1187:
1064:
1039:
1032:
1010:
1005:
958:
893:
778:
729:
719:
677:
583:
563:
532:
496:
112:
66:
16:
Variety of high-magnesium basalt that is very rich in the mineral olivine
1615:
1545:
1510:
1485:
1417:
1252:
1192:
1132:
1097:
990:
918:
833:
793:
761:
756:
672:
558:
372:
139:
116:
58:
20:
1525:
1500:
1397:
1357:
1320:
1222:
1087:
985:
975:
928:
888:
858:
788:
773:
751:
697:
692:
588:
486:
436:
204:
158:
111:
set in a groundmass of augite and more sodic plagioclase and perhaps
104:
70:
54:
404:
1490:
1412:
1407:
1272:
1237:
1157:
1112:
1107:
34:
627:
392:
Williams, Howel; Turner, Francis J.; Gilbert, Charles M. (1954).
76:
The olivine-rich picrite basalts that occur with the more common
1262:
1207:
1122:
1054:
491:
146:
631:
408:
294:"What is the difference between a komatiite and a picrite?"
95:
The name "picrite" can also be applied to an olivine-rich
184:
Picrite basalt with 30% olivine commonly erupts from the
254:
Metrich, Nicole; Pineau, Françoise; Javoy, Marc (1988).
312:
Igneous Rocks: A Classification and
Glossary of Terms
211:
in 1923 for rare basalts with more than 50% olivine.
177:
Picrite basalt has erupted in historical times from
1448:
1286:
1073:
663:
551:
505:
474:
443:
325:"The 1852 and 1868 Mauna Loa Picrite Eruptions"
237:; Turner, Francis J.; Verhoogen, John (1974).
643:
420:
8:
173:and various other oceanic island volcanoes.
138:texture. They are largely restricted to the
650:
636:
628:
427:
413:
405:
353:Contributions to Mineralogy and Petrology
314:(2nd ed.). Cambridge. p. 118.
61:. It is dark with yellow-green olivine
53:is a variety of high-magnesium olivine
276:
265:
7:
39:Picrite basalt or oceanite from the
99:: such picrite consists largely of
14:
65:(20-50%) and black to dark brown
57:that is very rich in the mineral
611:
145:Picrite basalt is found in the
310:Le Maitre, L. E., ed. (2002).
1:
103:of olivine and titanium-rich
329:Geophysical Monograph Series
444:Basalts by tectonic setting
84:and other volcanoes of the
1683:
337:American Geophysical Union
25:
18:
607:
475:Basalts by form and flow
19:Not to be confused with
703:Basaltic trachyandesite
683:Alkali feldspar granite
456:Mid-ocean ridge basalt
323:Rhodes, J. M. (1995).
275:Cite journal requires
43:
1093:Banded iron formation
235:Carmichael, Ian S. E.
186:Piton de la Fournaise
167:Piton de la Fournaise
41:Piton de la Fournaise
38:
518:Calc-alkaline basalt
506:Basalts by chemistry
292:Kerr, A. C. (1997).
107:pyroxene with minor
466:Volcanic arc basalt
461:Ocean island basalt
365:1988CoMP...98..326W
262:on 8 November 2005.
245:. pp. 406–426.
1449:Specific varieties
618:Geology portal
552:Important minerals
373:10.1007/bf00375183
125:TAS classification
78:tholeiitic basalts
44:
1634:
1633:
879:Nepheline syenite
625:
624:
513:Tholeiitic basalt
400:. pp. 40–41.
239:Igneous Petrology
1674:
1657:Ultramafic rocks
1576:Rapakivi granite
1288:Metamorphic rock
1075:Sedimentary rock
944:Quartz monzonite
652:
645:
638:
629:
616:
615:
429:
422:
415:
406:
401:
390:
384:
347:
345:
343:
321:
315:
308:
301:
300:on 22 June 2004.
296:. Archived from
290:
284:
278:
273:
271:
263:
258:. Archived from
252:
246:
232:
86:Hawaiian Islands
1682:
1681:
1677:
1676:
1675:
1673:
1672:
1671:
1647:Aphanitic rocks
1637:
1636:
1635:
1630:
1444:
1388:Pseudotachylite
1282:
1069:
1001:Tephriphonolite
659:
656:
626:
621:
610:
603:
547:
501:
482:Columnar basalt
470:
439:
433:
391:
387:
350:
341:
339:
322:
318:
309:
305:
291:
287:
274:
264:
253:
249:
233:
229:
226:
217:
209:Antoine Lacroix
198:
31:
24:
17:
12:
11:
5:
1680:
1678:
1670:
1669:
1664:
1659:
1654:
1649:
1639:
1638:
1632:
1631:
1629:
1628:
1623:
1618:
1613:
1608:
1603:
1598:
1593:
1588:
1583:
1581:Rhomb porphyry
1578:
1573:
1568:
1563:
1558:
1553:
1548:
1543:
1538:
1533:
1528:
1523:
1518:
1513:
1508:
1503:
1498:
1493:
1488:
1483:
1478:
1473:
1468:
1463:
1458:
1452:
1450:
1446:
1445:
1443:
1442:
1437:
1432:
1431:
1430:
1423:Talc carbonate
1420:
1415:
1410:
1405:
1400:
1395:
1390:
1385:
1380:
1375:
1370:
1365:
1360:
1355:
1350:
1345:
1344:
1343:
1333:
1328:
1323:
1318:
1313:
1308:
1303:
1298:
1292:
1290:
1284:
1283:
1281:
1280:
1275:
1270:
1265:
1260:
1255:
1250:
1245:
1240:
1235:
1230:
1225:
1220:
1215:
1210:
1205:
1200:
1195:
1190:
1185:
1180:
1175:
1170:
1165:
1160:
1155:
1150:
1145:
1140:
1135:
1130:
1125:
1120:
1115:
1110:
1105:
1100:
1095:
1090:
1085:
1079:
1077:
1071:
1070:
1068:
1067:
1062:
1057:
1052:
1047:
1042:
1037:
1036:
1035:
1025:
1024:
1023:
1016:Trachyandesite
1013:
1008:
1003:
998:
993:
988:
983:
978:
973:
972:
971:
966:
956:
951:
946:
941:
939:Quartz diorite
936:
931:
926:
921:
916:
911:
906:
901:
896:
891:
886:
881:
876:
871:
866:
861:
856:
851:
846:
841:
836:
831:
826:
821:
816:
811:
806:
801:
796:
791:
786:
781:
776:
771:
770:
769:
759:
754:
749:
748:
747:
737:
732:
727:
722:
717:
716:
715:
710:
700:
695:
690:
685:
680:
675:
669:
667:
661:
660:
658:Types of rocks
657:
655:
654:
647:
640:
632:
623:
622:
608:
605:
604:
602:
601:
596:
591:
586:
581:
576:
571:
566:
561:
555:
553:
549:
548:
546:
545:
543:Picrite basalt
540:
535:
530:
525:
520:
515:
509:
507:
503:
502:
500:
499:
494:
489:
484:
478:
476:
472:
471:
469:
468:
463:
458:
453:
447:
445:
441:
440:
434:
432:
431:
424:
417:
409:
403:
402:
385:
359:(3): 326–345.
348:
316:
303:
285:
277:|journal=
247:
225:
222:
216:
213:
197:
194:
190:
189:
182:
171:RĂ©union Island
47:Picrite basalt
28:Nitroguanidine
15:
13:
10:
9:
6:
4:
3:
2:
1679:
1668:
1665:
1663:
1660:
1658:
1655:
1653:
1650:
1648:
1645:
1644:
1642:
1627:
1624:
1622:
1619:
1617:
1614:
1612:
1609:
1607:
1604:
1602:
1599:
1597:
1594:
1592:
1589:
1587:
1584:
1582:
1579:
1577:
1574:
1572:
1569:
1567:
1564:
1562:
1559:
1557:
1554:
1552:
1549:
1547:
1544:
1542:
1541:Litchfieldite
1539:
1537:
1534:
1532:
1529:
1527:
1524:
1522:
1519:
1517:
1514:
1512:
1509:
1507:
1506:Hyaloclastite
1504:
1502:
1499:
1497:
1494:
1492:
1489:
1487:
1484:
1482:
1479:
1477:
1474:
1472:
1469:
1467:
1464:
1462:
1459:
1457:
1454:
1453:
1451:
1447:
1441:
1438:
1436:
1433:
1429:
1426:
1425:
1424:
1421:
1419:
1416:
1414:
1411:
1409:
1406:
1404:
1401:
1399:
1396:
1394:
1391:
1389:
1386:
1384:
1381:
1379:
1376:
1374:
1371:
1369:
1366:
1364:
1361:
1359:
1356:
1354:
1353:Litchfieldite
1351:
1349:
1346:
1342:
1339:
1338:
1337:
1334:
1332:
1329:
1327:
1324:
1322:
1319:
1317:
1314:
1312:
1309:
1307:
1304:
1302:
1299:
1297:
1294:
1293:
1291:
1289:
1285:
1279:
1276:
1274:
1271:
1269:
1266:
1264:
1261:
1259:
1256:
1254:
1251:
1249:
1246:
1244:
1241:
1239:
1236:
1234:
1231:
1229:
1226:
1224:
1221:
1219:
1216:
1214:
1211:
1209:
1206:
1204:
1201:
1199:
1196:
1194:
1191:
1189:
1186:
1184:
1181:
1179:
1176:
1174:
1171:
1169:
1166:
1164:
1161:
1159:
1156:
1154:
1151:
1149:
1146:
1144:
1141:
1139:
1136:
1134:
1131:
1129:
1126:
1124:
1121:
1119:
1116:
1114:
1111:
1109:
1106:
1104:
1101:
1099:
1096:
1094:
1091:
1089:
1086:
1084:
1081:
1080:
1078:
1076:
1072:
1066:
1063:
1061:
1058:
1056:
1053:
1051:
1048:
1046:
1043:
1041:
1038:
1034:
1031:
1030:
1029:
1026:
1022:
1019:
1018:
1017:
1014:
1012:
1009:
1007:
1004:
1002:
999:
997:
994:
992:
989:
987:
984:
982:
979:
977:
974:
970:
967:
965:
962:
961:
960:
957:
955:
952:
950:
947:
945:
942:
940:
937:
935:
932:
930:
927:
925:
922:
920:
917:
915:
914:Phonotephrite
912:
910:
907:
905:
902:
900:
897:
895:
892:
890:
887:
885:
882:
880:
877:
875:
872:
870:
867:
865:
862:
860:
857:
855:
852:
850:
847:
845:
842:
840:
837:
835:
832:
830:
827:
825:
822:
820:
819:Hyaloclastite
817:
815:
812:
810:
807:
805:
802:
800:
797:
795:
792:
790:
787:
785:
782:
780:
777:
775:
772:
768:
765:
764:
763:
760:
758:
755:
753:
750:
746:
743:
742:
741:
738:
736:
733:
731:
728:
726:
723:
721:
718:
714:
711:
709:
706:
705:
704:
701:
699:
696:
694:
691:
689:
686:
684:
681:
679:
676:
674:
671:
670:
668:
666:
662:
653:
648:
646:
641:
639:
634:
633:
630:
620:
619:
614:
606:
600:
597:
595:
592:
590:
587:
585:
582:
580:
577:
575:
572:
570:
567:
565:
562:
560:
557:
556:
554:
550:
544:
541:
539:
536:
534:
531:
529:
526:
524:
523:Alkali basalt
521:
519:
516:
514:
511:
510:
508:
504:
498:
497:Pahoehoe lava
495:
493:
490:
488:
487:Pillow basalt
485:
483:
480:
479:
477:
473:
467:
464:
462:
459:
457:
454:
452:
449:
448:
446:
442:
438:
430:
425:
423:
418:
416:
411:
410:
407:
399:
398:W. H. Freeman
395:
389:
386:
382:
378:
374:
370:
366:
362:
358:
354:
349:
338:
334:
330:
326:
320:
317:
313:
307:
304:
299:
295:
289:
286:
282:
269:
261:
257:
251:
248:
244:
240:
236:
231:
228:
227:
223:
221:
214:
212:
210:
206:
202:
195:
193:
187:
183:
180:
176:
175:
174:
172:
168:
164:
160:
156:
152:
148:
143:
141:
137:
133:
128:
126:
120:
118:
114:
110:
106:
102:
98:
97:alkali basalt
93:
91:
90:magma chamber
87:
83:
79:
74:
72:
68:
64:
60:
56:
52:
48:
42:
37:
33:
29:
22:
1551:Luxullianite
1531:Lapis lazuli
1476:Blue Granite
1403:Serpentinite
1378:Metapsammite
1128:Conglomerate
1050:Trondhjemite
1028:Trachybasalt
969:Pantellerite
869:Monzogranite
814:Hornblendite
799:Granodiorite
665:Igneous rock
609:
594:Cristobalite
542:
528:Trachybasalt
451:Flood basalt
393:
388:
356:
352:
340:. Retrieved
332:
328:
319:
311:
306:
298:the original
288:
268:cite journal
260:the original
250:
238:
230:
218:
200:
199:
191:
144:
129:
121:
94:
75:
50:
46:
45:
32:
1662:Volcanology
1652:Mafic rocks
1440:Whiteschist
1331:Greenschist
1311:Cataclasite
1301:Amphibolite
1228:Phosphorite
1178:Itacolumite
1103:Calcarenite
949:Quartzolite
884:Nephelinite
854:Lamprophyre
809:Harzburgite
767:Napoleonite
740:Charnockite
735:Carbonatite
725:Blairmorite
688:Anorthosite
569:Plagioclase
394:Petrography
342:18 February
243:McGraw-Hill
215:Common uses
169:volcano on
109:plagioclase
101:phenocrysts
63:phenocrysts
51:picrobasalt
1641:Categories
1606:Teschenite
1591:Shonkinite
1566:Pietersite
1561:Novaculite
1471:Borolanite
1456:Adamellite
1373:Metapelite
1341:Calcflinta
1306:Blueschist
1296:Anthracite
1278:Wackestone
1258:Travertine
1203:Lumachelle
1183:Jaspillite
1138:Diamictite
1060:Websterite
1045:Troctolite
1021:Benmoreite
981:Shonkinite
954:Rhyodacite
934:Pyroxenite
904:Peridotite
864:Lherzolite
839:Kimberlite
829:Ignimbrite
824:Icelandite
804:Granophyre
713:Shoshonite
224:References
1621:Variolite
1611:Theralite
1601:Tachylite
1586:Rodingite
1556:Mangerite
1536:Larvikite
1521:Jasperoid
1516:Jadeitite
1481:Epidosite
1435:Tectonite
1428:Soapstone
1393:Quartzite
1363:Migmatite
1348:Itabirite
1326:Granulite
1268:Turbidite
1248:Sylvinite
1243:Siltstone
1233:Sandstone
1218:Oil shale
1198:Limestone
1173:Gritstone
1168:Greywacke
1163:Geyserite
1153:Evaporite
1143:Diatomite
1118:Claystone
1083:Argillite
996:Tachylyte
964:Comendite
909:Phonolite
899:Pegmatite
874:Monzonite
849:Lamproite
844:Komatiite
784:Foidolite
745:Enderbite
708:Mugearite
599:Tridymite
579:Magnetite
574:Amphibole
538:Mugearite
435:Types of
381:115132181
179:Mauna Loa
165:, in the
155:Mauna Loa
151:Mauna Kea
132:Komatiite
69:, mostly
1596:Taconite
1571:Pyrolite
1496:Ganister
1466:Aphanite
1461:Appinite
1383:Phyllite
1368:Mylonite
1336:Hornfels
1316:Eclogite
1213:Mudstone
1188:Laterite
1148:Dolomite
1065:Wehrlite
1040:Trachyte
1033:Hawaiite
1011:Tonalite
1006:Tephrite
959:Rhyolite
924:Porphyry
894:Obsidian
779:Essexite
730:Boninite
720:Basanite
678:Andesite
584:Ilmenite
564:Pyroxene
533:Hawaiite
201:Oceanite
196:Oceanite
136:spinifex
113:analcite
67:pyroxene
1616:Unakite
1546:Llanite
1511:Ijolite
1486:Felsite
1418:Suevite
1253:Tillite
1193:Lignite
1133:Coquina
1098:Breccia
991:Syenite
919:Picrite
834:Ijolite
794:Granite
762:Diorite
757:Diabase
673:Adakite
559:Olivine
492:Aa lava
437:basalts
361:Bibcode
163:Curaçao
159:Hawaiʻi
140:Archean
117:biotite
82:KÄ«lauea
59:olivine
21:Pykrete
1667:Basalt
1526:Kenyte
1501:Gossan
1398:Schist
1358:Marble
1321:Gneiss
1223:Oolite
1088:Arkose
986:Sovite
976:Scoria
929:Pumice
889:Norite
859:Latite
789:Gabbro
774:Dunite
752:Dacite
698:Basalt
693:Aplite
589:Quartz
379:
205:augite
105:augite
71:augite
55:basalt
1491:Flint
1413:Slate
1408:Skarn
1273:Varve
1238:Shale
1158:Flint
1113:Chert
1108:Chalk
377:S2CID
147:lavas
1263:Tufa
1208:Marl
1123:Coal
1055:Tuff
344:2006
281:help
153:and
115:and
1626:Wad
369:doi
157:in
149:of
80:of
49:or
1643::
396:.
375:.
367:.
357:98
355:.
335:.
333:92
331:.
327:.
272::
270:}}
266:{{
241:.
161:,
119:.
73:.
651:e
644:t
637:v
428:e
421:t
414:v
383:.
371::
363::
346:.
302:.
283:)
279:(
188:.
30:.
23:.
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