Research output: Contribution to journal › Review article › peer-review
Spectroscopic evidence of the origin of brown and pink diamonds family from Internatsionalnaya kimberlite pipe (Siberian craton). / Yuryeva, Olga P.; Rakhmanova, Mariana I.; Zedgenizov, Dmitry A. et al.
In: Physics and Chemistry of Minerals, Vol. 47, No. 4, 20, 07.03.2020.Research output: Contribution to journal › Review article › peer-review
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TY - JOUR
T1 - Spectroscopic evidence of the origin of brown and pink diamonds family from Internatsionalnaya kimberlite pipe (Siberian craton)
AU - Yuryeva, Olga P.
AU - Rakhmanova, Mariana I.
AU - Zedgenizov, Dmitry A.
AU - Kalinina, Viktoria V.
PY - 2020/3/7
Y1 - 2020/3/7
N2 - New spectroscopic data were obtained to distinguish the specific features of brown and pink diamonds from Internatsionalnaya kimberlite pipe (Siberian craton). It is shown that pink and brown samples differ markedly in the content and degree of aggregation of nitrogen defects. Pink diamonds generally have higher nitrogen content and a lower aggregation state compared to brown samples, which often show significant variations in nitrogen content and aggregation state between different growth zones. The 491 and 576 nm luminescent centres, which are signs of deformed brown diamonds, are absent or of low intensity in pink diamonds implying that high nitrogen content predominantly in A form in the pink diamonds had stiffened the diamonds against natural plastic deformation. The GR1 centre, formed by a neutrally charged vacancy, was observed only in pink diamonds, which may be due to their formation and storage in the mantle at lower-temperature conditions. Mineral inclusions indicate peridotitic and eclogitic paragenesis for studied brown and pink diamonds, respectively. It is suggested that brown diamonds have been formed in a primitive mantle at higher temperatures and/or stored there much longer.
AB - New spectroscopic data were obtained to distinguish the specific features of brown and pink diamonds from Internatsionalnaya kimberlite pipe (Siberian craton). It is shown that pink and brown samples differ markedly in the content and degree of aggregation of nitrogen defects. Pink diamonds generally have higher nitrogen content and a lower aggregation state compared to brown samples, which often show significant variations in nitrogen content and aggregation state between different growth zones. The 491 and 576 nm luminescent centres, which are signs of deformed brown diamonds, are absent or of low intensity in pink diamonds implying that high nitrogen content predominantly in A form in the pink diamonds had stiffened the diamonds against natural plastic deformation. The GR1 centre, formed by a neutrally charged vacancy, was observed only in pink diamonds, which may be due to their formation and storage in the mantle at lower-temperature conditions. Mineral inclusions indicate peridotitic and eclogitic paragenesis for studied brown and pink diamonds, respectively. It is suggested that brown diamonds have been formed in a primitive mantle at higher temperatures and/or stored there much longer.
KW - Brown
KW - Defects
KW - Deformation
KW - Diamond
KW - Internatsionalnaya pipe
KW - Luminescence
KW - Mantle
KW - Pink
KW - PHOTOLUMINESCENCE
KW - INFRARED-ABSORPTION
KW - OPTICAL-PROPERTIES
KW - CENTERS
KW - NATURAL DIAMONDS
KW - CLOUDY MICROINCLUSIONS
KW - COLOR
KW - NITROGEN
KW - PLASTIC-DEFORMATION
KW - RED LUMINESCENCE SPECTRUM
UR - http://www.scopus.com/inward/record.url?scp=85081409954&partnerID=8YFLogxK
U2 - 10.1007/s00269-020-01088-5
DO - 10.1007/s00269-020-01088-5
M3 - Review article
AN - SCOPUS:85081409954
VL - 47
JO - Physics and Chemistry of Minerals
JF - Physics and Chemistry of Minerals
SN - 0342-1791
IS - 4
M1 - 20
ER -
ID: 23758972