Name/Title
LarimarEntry/Object ID
2013.1.25Description
Chemical Composition: SiO2
Crystal System: Triclinic System
Description: Common Name: Larimar
Chemistry: NaCa2Si3O8(OH)
Group: Silicates
Location: Santa Domingo, Dominican Republic
Description: This specimen is very small containing only sparse examples of Larimar. The small cabochon shows the color more vividly.
Physical Charateristics:
Pectolite (Larimar) is a white to gray mineral, NaCa2Si3O8(OH), sodium calcium inosilicate hydroxide. It crystallizes in the triclinic system typically occurring in radiated or fibrous crystalline masses. It has a Mohs hardness of 4.5 to 5 and a specific gravity of 2.7 to 2.9. The gemstone variety, larimar, is a pale to sky blue.
Fracture: Conchoidal
Hardness: 7 Quartz
Luster: Pearly
Rock Type: Sedimentary
Specific Gravity: 2.68-2.72
Streak: WhiteCollection
RAGM Mineral CollectionAcquisition
Accession
2013.1Source or Donor
Crater Rock Museum (Misc. donors)Acquisition Method
GiftDimensions
Width
1-3/4 inDepth
1-1/2 inLength
1-3/4 inLocation
Location
Drawer
Bottom ShelfShelf
LeftCabinet
Case# 33Wall
EastBuilding
Freida Smith HallCategory
Permanent
