12244-39-2

Basic information

• Product Name: obsidian
• Synonyms: obsidian
• CAS NO: 12244-39-2
• Molecular Weight: 0
• Mol File: 12244-39-2.mol
• Article Data: 0

Chemical Properties

• Appearance: /
• CAS DataBase Reference: obsidian(CAS DataBase Reference)
• NIST Chemistry Reference: obsidian(12244-39-2)
• EPA Substance Registry System: obsidian(12244-39-2)

Safety Data

• Hazardous Substances Data: 12244-39-2(Hazardous Substances Data)

Related news

Sources of obsidian (cas 12244-39-2) for the Sinagua of Northern Arizona (USA)08/15/2019

Obsidian was an important resource for prehistoric people in the North American Southwest. Elemental analysis of obsidian samples from Southwestern archaeological sites has been widely successful in identifying the raw material sources used by the people in the region. X-ray fluorescence (XRF) i...detailed

Comparison of obsidian (cas 12244-39-2) and chert consumption during the Middle Helladic at Kirrha, Phocis, Greece08/14/2019

Lithic artifacts were still in use in Bronze Age Europe, in spite of the emergence of a new technology, namely metallurgy, during this period. In fact, stone technology continued to be used everywhere until at least the end of the Early Bronze Age, and even until the end of the Late Bronze Age i...detailed

Chemometric analysis of Mesoamerican obsidian (cas 12244-39-2) sources08/13/2019

We propose a combination of portable X-ray fluorescence (pXRF) and chemometrics to discriminate between Mesoamerican obsidian sources and to assign archaeological artifacts of unknown origin to their respective deposits using a procedure that does not require any type of calibration or reference...detailed

Variability in obsidian (cas 12244-39-2) structural water content and its importance in the hydration dating of cultural artifacts08/12/2019

The process of dating ancient obsidian artifacts converts the quantity of surface diffused molecular water to a calendar age using an experimentally derived diffusion coefficient predicted from glass composition. The internal structural water content of rhyolitic obsidian has been identified as ...detailed

Technological, use-wear, and residue analyses of obsidian (cas 12244-39-2) blades from Classic Maya burials at Pook's Hill, Belize08/11/2019

Obsidian artifacts are commonly recovered as funerary items in ancient Maya burials. Young and old individuals of both sexes and different social classes were buried with different quantities of obsidian, primarily in the form of prismatic blades. Although obsidian blades can serve many function...detailed

obsidian (cas 12244-39-2) resource use from the Jomon to Okhotsk period on Rebun Island: An analysis of archaeological obsidian (cas 12244-39-2)08/10/2019

Hokkaido obsidian sources have been widely exploited by hunter-gatherer groups in Northeast Asia since the Upper Paleolithic (~30,000 cal. BP). Rebun Island is located 50 km from the northwest tip of Hokkaido in the Sea of Japan. Given that obsidian does not occur naturally on Rebun Island, all ...detailed

Least Cost Pathway Analysis of obsidian (cas 12244-39-2) circulation in Early Holocene–Early Middle Holocene Cyprus08/09/2019

Obsidian, a naturally occurring glass and rare resource, appears in the archaeological record of Cyprus at the same time when human populations establish permanent settlements across the island. Geological sources of obsidian do not occur on Cyprus so the material had to be procured elsewhere an...detailed

pXRF analysis of obsidian (cas 12244-39-2) artifacts from Albania: Crossroads or cul-de-sac?08/08/2019

Archaeologists first identified obsidian artifacts in Albania in the early 20th century, but their numbers were small and the contexts insecure. Their source was never determined. Nor was it clear why, given the large numbers of obsidian artifacts recovered in regions to the south and north, in ...detailed

obsidian (cas 12244-39-2) studies in California archaeology08/07/2019

This paper traces and reviews the conduct of obsidian studies in California, with emphasis on the results of provenance studies and hydration dating over the past few decades. Review of substantive results reveals temporal and spatial change in the distribution of certain obsidians in different ...detailed