Samples include magnetite-quartz-chalcopyrite veins and semi-massive sulfide pods associated with chlorite, epidote, actinolite
and K-feldspar alteration.
According to Title 34 Labor and Workmens Compensation, Chapter 5A-34 (C.34:5A-34 Definitions)), asbestos is defined as asbestiform varieties of actinolite
, amosite (cummuningtonitegrunerite), anthophyllite, chrysotile (serpentine), crocidolite (riebeckite) and tremolite.
Different amphiboles have been found in southern Finland (pargasite, potassium pargasite, Fe-hornblende and actinolite
), but their lattice parameters differ from those of Lemme amphiboles.
This hot fluid changes the rock so that minerals without hydroxyl groups (OH-) or water in their structures (pyroxene, plagioclase feldspar and olivine) are often altered to minerals with hydroxyl groups (OH-) in their structures, such as chlorite, epidote, actinolite
The samples of green schist are inequigranular and fine to coarse-grained and consist of amphibole including actinolite
, plagioclase, quartz, epidote, carbonate, ilmenite, rutile, ore mineral(s) and a substantial amount of clay.
Asbestos (Chrysolite, Amosite, Crocidolite, Tremolite, Actinolite
, and Anthophyllite).
There is a dire need to acquaint our workforce with the composition of asbestos material in the form of fibrous silicate minerals actinolite
, amosite, anthophyllite, crocidolite, tremolite and chysolite.
Quartz is found as part of a propylitic alteration assemblage including chlorite and actinolite
that overprints higher temperature, pyroxene-bearing assemblages [64-66].
Asbestos (chrysotile, amosite, crocidolite, tremolite, actinolite
The conditions of metamorphism of the metabasites of the Arquia Complex in all lithotypes studied along the Central Cordillera reached the amphibolite facies for the garnet-amphibolite without garnet and greenschist facies for the epidote actinolite
Metamorphic rocks are the predominant lithology, represented by locally calcareous chlorite, sericite and graphite phyllites, and micaceous, actinolite
and talc schists and minor graphite schists of Paleogene age, which reached the greenschist facies.
Compared to amphiboles in the tremolite-actinolite-ferroactinolite series (Deer et al., 1997), the overall pale colour, relatively low SG and weak pleochroism corresponded to a member with a low iron content, and therefore suggested tremolite, rather than actinolite
, as the identity of this crystal.