Igneous Rock Specimens
more photos coming soon

Geosource offers 4 different size/packages of Igneous rocks for your convenience  Size specifications are shown below.
10 PK EACH: Rock is approximately 1" x 1" to 1" x 2" 10 pieces in a box or a resealable bag

.5 KG PACK: Rock pieces are various sizes in a resealable bag

LARGE SIZE: Each rock is approximately 2" x 3" to 3" x 4" in a box

LAB CHIPS FOR TESTING ETC: 30 Samples each 3/8" to 3/4" in a resealable bag

Andesite (Hornblende Phenocrysts)

10 Pack [R1002], 
.5KG [R1001], 
Large Size [R1003], 
Test Chips [R1001C]
Stock Number

Anorthosite (Grey Coarse Grained)

10 Pack [R1005], 
.5KG [R1004], 
Large Size [R1006], 
Test Chips [R1004C]
Stock Number

Basalt (Flood Dark Grey Black)

10 Pack [R1008], 
.5KG [R1009], 
Large Size [R1090], 
Test Chips [R1009C]
Stock Number

Basalt (Grey to Black Fine Grained)

10 Pack [R1011], 
.5KG [R1010], 
Large Size [R1012], 
Test Chips [R1010C]
Stock Number

Basalt (Vesicular, Brown to Black with abundant vesicles)

10 Pack [R1014], 
.5KG [R1013], 
Large Size [R1015], 
Test Chips [R1013C]
Stock Number

Breccia, Volcanic angular rock fragments in groundmass

10 Pack [R1087], 
.5KG [R1088], 
Large Size [R1089], 
Test Chips [R1088C]
Stock Number

Carbonatite, coarse-grained 

10 Pack [R1017], 
.5KG [R1016],
Large Size [R1018],
Test Chips [R1016C]
Stock Number

Dacite, porphyry-gray (Not available at this time)

10 Pack [R1020], 
.5KG [R1022], 
Large Size [R1019], 
Test Chips [R1022C]

Diorite, medium-grained w/ hornblende

10 Pack [R1023], 
.5KG [R1021], 
Large Size [R1024], 
Test Chips [R1021C]
Stock Number

Gabbro, coarse-grained, brown to black

10 Pack [R1026], 
.5KG [R1025], 
Large Size [R1027], 
Test Chips [R1025C]
Stock Number

Granite, Graphic; shows good graphic texture in pink feldspar

10 Pack [R1029], 
.5KG [R1028], 
Large Size [R1030], 
Test Chips [R1028C]
Stock Number

Granite, red, coarse-grained

10 Pack [R1032], 
.5KG [R1031], 
Large Size [R1033], 
Test Chips [R1031C]
Stock Number

Granite, gray-white, Medium grained

10 Pack [R1035], 
.5KG [R1034], 
Large Size [R1036], 
Test Chips [R1034C]
Stock Number

Granodiorite, gray, medium grained (Not available at this time)

10 Pack [R1038],
 .5KG [R1037], 
Large Size [R1091], 
Test Chips [R1037C]

Monzonite, medium-grained quartz monsonite

10 Pack [R1040], 
.5KG [R1039], 
Large Size [R1041], 
Test Chips [R1039C]
Stock Number

Obsidian, black lustrous

10 Pack [R1043], 
.5KG [R1042], 
Large Size [R1044], 
Test Chips [R1042C]
Stock Number

Obsidian, brown and black banded

10 Pack [R1046], 
.5KG [R1047], 
Large Size [R1092], 
Test Chips [R1047C]
Stock Number

Obsidian, "snowflake"  

10 Pack [R1049],
.5KG [R1048], 
Large Size [R1050], 
Test Chips [R1048C]
Stock Number

Obsidian, pitchstone, black

10 Pack [R1052], 
.5KG [R1051], 
Large Size [R1053], 
Test Chips [R1051C]
Stock Number

Pegmatite, (pink) very coarse grained with quartz,muscovite, and feldspar

 

Pegmatite, (white) very coarse grained some black tourmaline

10 Pack [R1055], 
.5KG [R1054],
Large Size [R1056], 
Test Chips [R1054C]
Stock Number

Peridotite

10 Pack [R1058], 
.5KG [R1057], 
Large Size [R1059], 
Test Chips [R1057C]
Stock Number

Peridotite

 

Pumice, tan to gray-white 100% of pieces float

 

Pumice, light gray 

10 Pack [R1061], 
.5KG [R1060], 
Large Size [R1062], 
Test Chips [R1060C]
Stock Number

Rhyolite, gray porphyry

10 Pack [R1064], 
.5KG [R1065], 
Large Size [R1095], 
Test Chips [R1065C]
Stock Number

Rhyolite, pink to gray, fine-grained

10 Pack [R1067],
.5KG [R1066], 
Large Size [R1068], 
Test Chips [R1066C]
Stock Number

Scoria, reddish-brown to dark gray

10 Pack [R1070], 
.5KG [R1069], 
Large Size [R1071], 
Test Chips [R1069C]
Stock Number

Syenite, gray, medium-grained no quartz

10 Pack [R1073], 
.5KG [R1072], 
Large Size [R1074], 
Test Chips [R1072C]
Stock Number

Trachyte Porphyry, gray, porphyryitic large phenocrysts some show zoning

 

Trachyte Porphyry, gray, porphyryitic small phenocrysts

 

Trachyte, gray to red

10 Pack [R1076], 
.5KG [R1075], 
Large Size [R1077], 
Test Chips [R1075C]
Stock Number

Tuff, light gray, fine-grained

10 Pack [R1079], 
.5KG [R1078], 
Large Size [R1080], 
Test Chips [R1078C]
Stock Number

Vitrophyre(Obsidian Porphyry), dark, glassy with feldspar phenocrysts

10 Pack [R1082], 
.5KG [R1081], 
Large Size [R1083], 
Test Chips [R1081C]
Stock Number

Volcanic Ash,  light gray rock fragments in a mass of glass shards

10 Pack [R1085], 
.5KG [R1084], 
Large Size [R1086], 
Test Chips [R1084C] 
Not Avaliable at this time