충남 서부 사문석 광산 내 석면의 산출유형 (Occurrence types of asbestos within the serpentinite mines of the western part of Chungnam)

서지정보

· 발행기관 : 한국산업보건학회
· 수록지 정보 : 한국산업보건학회지 / 19권 / 1호 / 39 ~ 50페이지
· 저자명 : 송석환, 황정환, 황범구, 손해영, 김현욱

초록

This study is for the occurrence types of asbestos within 2
serpentinite mines, Baekdong and Kwangsi, Chungnam. They
were exploited as serpentinite mines for several decades and
closed in the 1980's. Asbestos with associated minerals were
collected from the serpentinite bodies. They were examined
with microscopes and FESEM, and analysed with EPMA,
XRD and EDX to confirm for the types and/or compositions of
the minerals. The serpentinites contain asbestos and nonasbestos
minerals. Asbestos include chrysotile, tremolite and
actinolite. The chrysotiles occur as veins of several ㎜ to cm
thickness with random directions. The tremolite and actinolite
occur along cracks and fractures of several ㎝ to ten ㎝
thickness. They show mineralogical characteristics showing
common asbestos under the microscope. Non-asbestos
including chrysotile, lizardite, antigorite, tremolite and actinolite
were also found within the serpentinite. The serpentines form
pseudomorphic mesh textures, and also show hourglass or
ribbon textures. The tremolite and actinolite were formed from
the alterations of the pyroxenes and amphiboles, and plot
between tremolite and magnesio hornblende. Tremolitic grains
are colorless and occur as commonly elongated grains whereas
the magnesio hornblende grains mainly show light green and
occur as subhedral to euhedral grains. Overall results suggest
that three types of asbestos were found in the Baekdong and
Kwangsi serpentinite mines with varieties of the occurrences.
Based on the occurrence types for the asbestos, additional
studies are required for the asbestos of the top soil and the air.

영어초록

This study is for the occurrence types of asbestos within 2
serpentinite mines, Baekdong and Kwangsi, Chungnam. They
were exploited as serpentinite mines for several decades and
closed in the 1980's. Asbestos with associated minerals were
collected from the serpentinite bodies. They were examined
with microscopes and FESEM, and analysed with EPMA,
XRD and EDX to confirm for the types and/or compositions of
the minerals. The serpentinites contain asbestos and nonasbestos
minerals. Asbestos include chrysotile, tremolite and
actinolite. The chrysotiles occur as veins of several ㎜ to cm
thickness with random directions. The tremolite and actinolite
occur along cracks and fractures of several ㎝ to ten ㎝
thickness. They show mineralogical characteristics showing
common asbestos under the microscope. Non-asbestos
including chrysotile, lizardite, antigorite, tremolite and actinolite
were also found within the serpentinite. The serpentines form
pseudomorphic mesh textures, and also show hourglass or
ribbon textures. The tremolite and actinolite were formed from
the alterations of the pyroxenes and amphiboles, and plot
between tremolite and magnesio hornblende. Tremolitic grains
are colorless and occur as commonly elongated grains whereas
the magnesio hornblende grains mainly show light green and
occur as subhedral to euhedral grains. Overall results suggest
that three types of asbestos were found in the Baekdong and
Kwangsi serpentinite mines with varieties of the occurrences.
Based on the occurrence types for the asbestos, additional
studies are required for the asbestos of the top soil and the air.

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