TY - JOUR

T1 - Micro‐raman spectroscopy assessment of chemical compounds of mantle clinopyroxenes

AU - Kalugina, Anastasiya D.

AU - Zedgenizov, Dmitry A.

N1 - Funding Information: Funding: The Raman spectroscopic study of clinopyroxenes and data processing was supported by Russian Science Foundation (16‐17‐10067). The sample preparation and study of chemical composition of clinopyroxenes was supported by Russian Science Foundation (18‐17‐00249). Publisher Copyright: © 2020 by the authors. Licensee MDPI, Basel, Switzerland. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/12

Y1 - 2020/12

N2 - The composition of clinopyroxenes is indicative for chemical and physical properties of mantle substrates. In this study, we present the results of Raman spectroscopy examination of clinopyroxene inclusions in natural diamonds (n = 51) and clinopyroxenes from mantle xenoliths of peridotites and eclogites from kimberlites (n = 28). The chemical composition of studied clinopyroxenes shows wide variations indicating their origin in different mantle lithologies. All clinopyroxenes have intense Raman modes corresponding to metal‐oxygen translation (~300–500 cm−1), stretching vibrations of bridging O‐Si‐Obr (ν11~670 cm−1), and nonbridging atoms O‐Si‐Onbr (ν16~1000 cm−1). The peak position of the stretching vibration mode (ν11) for the studied clinopyroxenes varies in a wide range (23 cm−1) and generally correlates with their chemical composition and reflects the diopside‐jadeite heterovalent isomorphism. These correlations may be used for rough estimation of these compounds using the non‐destructive Raman spectroscopy technique.

AB - The composition of clinopyroxenes is indicative for chemical and physical properties of mantle substrates. In this study, we present the results of Raman spectroscopy examination of clinopyroxene inclusions in natural diamonds (n = 51) and clinopyroxenes from mantle xenoliths of peridotites and eclogites from kimberlites (n = 28). The chemical composition of studied clinopyroxenes shows wide variations indicating their origin in different mantle lithologies. All clinopyroxenes have intense Raman modes corresponding to metal‐oxygen translation (~300–500 cm−1), stretching vibrations of bridging O‐Si‐Obr (ν11~670 cm−1), and nonbridging atoms O‐Si‐Onbr (ν16~1000 cm−1). The peak position of the stretching vibration mode (ν11) for the studied clinopyroxenes varies in a wide range (23 cm−1) and generally correlates with their chemical composition and reflects the diopside‐jadeite heterovalent isomorphism. These correlations may be used for rough estimation of these compounds using the non‐destructive Raman spectroscopy technique.

KW - Clinopyroxene

KW - Diamond

KW - Eclogite

KW - Mantle

KW - Peridotite

KW - Raman spectroscopy

KW - SYSTEM

KW - MGSIO3

KW - eclogite

KW - ECLOGITES

KW - KIMBERLITE

KW - FEATURES

KW - peridotite

KW - diamond

KW - PYROXENE

KW - ORIGIN

KW - mantle

KW - clinopyroxene

KW - DIAMONDS

KW - MINERALOGY

KW - WATER

UR - http://www.scopus.com/inward/record.url?scp=85097031795&partnerID=8YFLogxK

U2 - 10.3390/min10121084

DO - 10.3390/min10121084

M3 - Article

AN - SCOPUS:85097031795

VL - 10

SP - 1

EP - 11

JO - Minerals

JF - Minerals

SN - 2075-163X

IS - 12

M1 - 1084

ER -