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Actinolite Asbestos


ACTINOLITE ASBESTOS

 

Chemical formula:

Actinolite: Ca2Mg4.5Fe2+0.5Si8O22(OH)2 - Ca2Mg2.5Fe2+2.5Si8O22(OH)2

 

Sources: Actinolite was seldom mined commercially. It is typically found as a contaminant such as in the Vermiculite mines of Libby, MT and the talc mines of Norway and Sweden.

 

Overview:

Actinolite is part of a complete solid solution series from Tremolite to Ferroactinolite. All members differ by their relative amounts of Magnesium and Iron. Tremolite is at one end of the scale with a higher Mg to Iron ratio. When the total atomic Fe content to total Fe + Mg, exceeds 10% the species is no longer called Tremolite and is now Actinolite. As the iron content increases to > 50% the mineral is now classified as Ferroactinolite. In this solid solution series only Tremolite and Actinolite are regulated.

 

Actinolite is monoclinic and can exhibit inclined extinction by PLM. Actinolite can exhibit some poleochroism, the strength of which is related to its iron content. Actinolite is pale to dark green in plane polarized light. Random orientation SAED of actinolite shows a layerline spacing of 5.3 Å with twinning being uncommon. Actinolite is a member of the amphibole double chain silicate group.

 

Uses:

Uncommon in building materials except as a contaminant, contaminant in talc and some vermiculites, present in some soils as is the case in California.

Ann Arbor, MI (LAB 08) - NVLAP Lab Code 101048-4Atlanta, GA (LAB 07) - NVLAP Lab Code 101048-1Baton Rouge, LA (LAB 25) - NVLAP Lab Code 200375-0Beltsville, MD (LAB 19) - NVLAP Lab Code 200293-0Boston, MA (LAB 13) - NVLAP Lab Code 101147-0Buffalo, NY (LAB 14) - NVLAP Lab Code 200056-0Carle Place, NY (LAB 06) - NVLAP Lab Code 101048-10Charlotte, NC (LAB 41) - NVLAP Lab Code 200841-0Chicago, IL (LAB 26) - NVLAP Lab Code 200399-0Cinnaminson, NJ (LAB List in Description) - NVLAP Lab Code 101048-0Dallas, TX (LAB 11) - NVLAP Lab Code 600111-0Denver, CO (LAB 22) - NVLAP Lab Code 200828-0EMSL Canada - Calgary, AB (LAB 65) - NVLAP Lab Code 500100-0EMSL Canada - Edmonton, AB (LAB 50) - NVLAP Lab Code 600321-0EMSL Canada - Markham, ON (LAB 66) - NVLAP Lab Code 600317-0EMSL Canada - Montreal, QC (LAB 68) - NVLAP Lab Code 201052-0EMSL Canada - Ottawa, ON (LAB 67) - NVLAP Lab Code 201040-0EMSL Canada - Toronto, ON (LAB 55) - NVLAP Lab Code 200877-0EMSL Canada - Vancouver, BC (LAB 69) - NVLAP Lab Code 201068-0Fort Lauderdale, FL (LAB 56) - NVLAP Lab Code 500085-0Houston, TX (LAB 15) - NVLAP Lab Code 102106-0Huntington Beach, CA (LAB 33) - NVLAP Lab Code 101384-0Indianapolis, IN (LAB 16) - NVLAP Lab Code 200188-0Kernersville, NC (LAB 02) - NVLAP Lab Code 102104-0Las Vegas, NV (LAB 31) - NVLAP Lab Code 600140-0Long Island City, NY (LAB 03) - NVLAP Lab Code 101048-9Miami, FL (LAB 17) - NVLAP Lab Code 200204-0Minneapolis, MN (LAB 35) - NVLAP Lab Code 200019-0Ontario, California (San Bernadino County / Inland Empire) (LAB 71) - NVLAP Lab Code 600239-0Orlando, FL (LAB 34) - NVLAP Lab Code 101151-0Phoenix, AZ (LAB 12) - NVLAP Lab Code 200811-0Piscataway, NJ (LAB 05) - NVLAP Lab Code 101048-2Plymouth Meeting, PA (LAB 18) - NVLAP Lab Code 200699-0Raleigh, NC (LAB 29) - NVLAP Lab Code 200671-0Rochester, NY (LAB 53) - NVLAP Lab Code 600183-0San Diego, CA (LAB 43) - NVLAP Lab Code 200855-0San Leandro, CA (LAB 09) - NVLAP Lab Code 101048-3Santa Clara, CA (LAB 47) - NVLAP Lab Code 600318-0Seattle, WA (LAB 51) - NVLAP Lab Code 200613-0South Pasadena, CA (LAB 32) - NVLAP Lab Code 200232-0South Portland, ME (LAB 62) - NVLAP Lab Code 500094-0St. Louis, MO (LAB 39) - NVLAP Lab Code 200742-0Syracuse, NY (LAB 73) - NVLAP Lab Code 600283-0Tacoma, WA (LAB 74) - NVLAP Lab Code 600324-0Tampa, FL (LAB 93) - NVLAP Lab Code 600215-0Wallingford, CT (LAB 24) - NVLAP Lab Code 200700-0
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