{"id":10751,"date":"2023-07-14T13:27:31","date_gmt":"2023-07-14T11:27:31","guid":{"rendered":"https:\/\/blog.gsa-messgeraete.de\/harmful-asbestos-in-serpentinite-rock\/"},"modified":"2025-04-26T14:12:16","modified_gmt":"2025-04-26T12:12:16","slug":"harmful-asbestos-in-serpentinite-rock","status":"publish","type":"post","link":"https:\/\/blog.gsa-messgeraete.de\/en\/harmful-asbestos-in-serpentinite-rock\/","title":{"rendered":"Harmful asbestos in serpentinite rock"},"content":{"rendered":"\n

Serpentinite<\/strong>, a dark greenish natural stone <\/strong>with characteristic spots and whitish bands, is mainly used as a decorative stone<\/strong>. Serpentinite <\/strong>is still used today for flooring, cladding and other decorative products. However, serpentinite<\/strong> can release harmful asbestos fibers<\/strong> under certain conditions. These dangers exist above all when serpentinite<\/strong> is worked or broken <\/strong>.<\/p>\n\n\n\n\n\n\n\n

Use of serpentinite as a rock<\/h2>\n\n\n\n

For centuries, serpentinite<\/strong> has been used to make facades<\/em>, handicrafts<\/em>, jewelry<\/em> and much more. These stones were also used in historical buildings<\/strong>. s<\/strong><\/em>erpentine-containing rocks<\/strong> were also used in historical buildings for columns<\/em>, ballustrades<\/em> and decorative stone<\/em>, for example. The earliest products made of serpentinite as everyday objects<\/em> are already known from the 15th century. These include drinking vessels, plates, screw-top bottles and other containers. <\/p>\n\n\n\n

In recent decades, serpentine <\/strong>stones have only rarely been used for artistic purposes such as monuments. Today, they are mainly used as a raw material <\/strong>for gravel and chippings<\/strong> or as a base material for terrazzo<\/strong> and artificial stone floors<\/strong>. <\/p>\n\n\n\n


<\/p>\n\n\n\n

Serpentinite rock – characteristics and properties<\/h2>\n\n\n\n

Both the <\/strong>The terms“serpentine<\/strong>” and“serpentinite<\/strong>” are of Latin origin and are translated as snake <\/strong>or serpentine stone<\/strong>. The term is intended to refer to the spot-like markings that resemble snakeskin. <\/p>\n\n\n\n

In everyday language, the term serpentine is often used for serpentinite<\/strong>. However, this also stands for any mineral of the serpentine group. Although the two terms are closely related, they do not refer to the same thing. Therefore, if the rock<\/strong> is meant, the term serpentinite<\/strong><\/em> should always be used. <\/p>\n\n\n\n

The natural stone serpentinite<\/strong> is mostly dark green<\/strong><\/em> or sometimes yellow-brown<\/em> to purple<\/em> and is characteristically interspersed with calcite veins. <\/em> <\/p>\n\n\n\n

Serpentinite<\/strong> is a metamorphic<\/strong> rock that was formed by tectonic and metamorphic processes<\/em> under very high temperatures<\/em> and pressure<\/em> from basic rocks in the earth’s mantle through deformation. The resultant arrangement of the rock particles<\/em> gives serpentinites <\/strong>their patchy<\/em>, veined or striped appearance<\/em>. Serpentinites are not acid-resistant<\/strong> and are not resistant<\/strong> to weathering<\/strong>. <\/p>\n\n\n\n

Larger deposits of serpentinite<\/strong> <\/em>can be found in the Ore Mountains (Z\u00f6blitz)<\/em> and in the Fichtel Mountains (Rehau)<\/em> as well as in the Harz Mountains<\/em> and the Black Forest.<\/em> There are also other larger deposits for mining worldwide. <\/p>\n\n\n\n


<\/p>\n\n\n\n

Serpentine asbestos in serpentinites<\/h2>\n\n\n\n

Serpentine asbestos<\/strong> can occur in serpentinites<\/strong> in varying <\/em>proportions. Asbestos <\/strong>is naturally occurring in certain fibrous silicate minerals<\/em> <\/strong>with a rod-like<\/em>or needle-like appearance<\/em>, which unites them as a collective term. <\/p>\n\n\n\n

The ultrabasic<\/em> (consisting of less than 45% silica) serpentine rocks<\/strong> consist of serpentine asbestos<\/strong> such as antigorite<\/em>, chrysotile<\/a> (clinochrysotile<\/em>, orthochrysotile<\/em>, parachrysotile<\/em>) such as white asbestos<\/strong>, brown asbestos<\/strong> or green asbestos<\/strong>, as well as amphibole asbestos<\/strong> (e. g. a. tremolite<\/em> <\/a>and anthophyllite<\/em>). Other minor components (less than 5%) may consist of calcite, olivine, magnetite, garnet, augite, hornblende and mica minerals.<\/p>\n\n\n\n


<\/p>\n\n\n\n

Harmful asbestos fibers in serpentinite<\/h2>\n\n\n\n

For a long time, asbestos <\/strong>with its versatile asbestos fibers has been used industrially<\/em> as an inexpensive and readily available“miracle cure<\/strong>” and served as a suitable raw material <\/em>for the production of thousands of products<\/strong>. Its special properties, such as its resistance to acids, heat and insulation, were used in a wide range of products. <\/p>\n\n\n\n

Serpentinite<\/strong>, which can naturally contain asbestos <\/em>, is used for floor tiles<\/strong>, cladding<\/strong> and other decorative products. Clinochrysotile (white asbestos) is the most commonly used type of asbestos for these materials.<\/p>\n\n\n\n

The major health risk <\/strong>posed by asbestos and inhalation exposure to asbestos fibers <\/strong>over long periods of time is now well known. Released asbestos fibers can cause lung diseases<\/em> such as asbestosis and cancer<\/em>. The use of asbestos has been banned throughout Europe<\/strong> since 2005<\/strong> (1993 in Germany).<\/p>\n\n\n\n

Materials containing asbestos<\/strong>, such as serpentinite containing asbestos <\/strong>, are hazardous substances. <\/strong> <\/p>\n\n\n\n


<\/p>\n\n\n\n

Processing of asbestos-containing serpentinite – TRSG517<\/h2>\n\n\n\n

When working with asbestos-containing serpentinite<\/strong>, asbestos fibers<\/strong> can be released<\/strong> and enter the air we breathe. It is therefore imperative that suitable protective measures<\/em> are observed, particularly for work<\/strong> such as drilling<\/strong>, milling<\/strong>, engraving <\/strong>and grinding<\/strong>. <\/p>\n\n\n\n

Employers are subject to obligations in this regard via the Technical Rules for Hazardous Substances<\/strong>. TRGS 517<\/strong>, Technical Rules for Hazardous Substances<\/strong>, defines the requirements<\/em> for“activities involving mineral raw materials potentially containing asbestos and mixtures and products made from them<\/em>“. The employer <\/em>must comply with the requirements<\/em> of the Hazardous Substances Ordinance (GefStoffV)<\/em> in accordance with TRSG 517<\/strong> or take adapted measures that also comply with these. <\/p>\n\n\n\n

In particular, TRSG 517<\/strong> Respiratory protection and protective clothing<\/em> <\/strong>for working with asbestos-containing materials<\/em> <\/strong>which must be selected according to the conditions of use. <\/p>\n\n\n\n


<\/p>\n\n\n\n

Limit values for asbestos fiber concentrations – Use of suitable respiratory protective equipment<\/h2>\n\n\n\n

Accordingly, respiratory protective devices<\/strong> are already<\/em> prescribed for asbestos fiber concentrations of 10,000 F\/m\u00b3 to 100,000 F\/m\u00b3<\/strong><\/em>. Depending on the duration and activity<\/strong>, FFP2 masks<\/em>, half masks with P2 filters <\/em>or <\/em><\/strong>Masks with a blower and particle filter TM1P<\/em> provide suitable protection. For asbestos fiber concentrations of 100,000 F\/m\u00b3 to 300,000 F\/m\u00b3<\/strong><\/em>, masks with particle filter P3 <\/em>should be worn. For <\/em>over 300,000 F\/m\u00b3<\/em><\/strong> asbestos fiber concentrations<\/strong>masks with a blower and TM3P particle filter<\/em> must be used. In general, after working with materials containing asbestos<\/em>, the contaminated disposable protective suits<\/em> must be disposed of or the reusable suits<\/em> cleaned.<\/p>\n\n\n\n

Recommendations<\/strong> on which personal protective equipment<\/strong><\/em> <\/strong>and conditions at the workplace for working with serpentinite containing asbestos <\/strong>can be found<\/em> at <\/strong>in the brochure <\/strong>published by Suva<\/strong> (accident insurance in Switzerland): “Serpentinite containing asbestos: vital rules for working with it”.<\/em> It describes numerous different types of work with serpentinite rock, from drilling to milling and grinding serpentinite containing asbestos, as well as important protective measures.<\/p>\n\n\n\n


<\/p>\n\n\n\n

Asbestos measurement with GSA measuring devices SG12<\/h2>\n\n\n\n

In order to determine possible asbestos exposure<\/strong> due to the release of asbestos fibers<\/strong>, e.g. at the workplace<\/strong>, fibre measurements<\/strong> must be carried out in accordance with VDI 3492<\/strong> for the measurement of asbestos fibers<\/strong> using suitable measuring devices<\/strong>. <\/p>\n\n\n\n

With the GSA measuring devices<\/strong> <\/strong><\/a><\/em>SG12<\/strong><\/a> <\/a><\/em>it is possible to collect asbestos fibers<\/strong> over a certain time and defined air volume with a fine filter. After sampling<\/strong> with the <\/a>SG12<\/strong><\/a><\/strong><\/strong><\/strong> the asbestos fibers can be precisely determined. <\/em><\/p>\n\n\n\n

Through our partner company GSA Gesellschaft f\u00fcr Schadstoffanalytik mbH<\/strong> precise asbestos fiber analyses<\/strong> can be carried out under SEM (Scanning electron microscopy)<\/a> using the latest equipment technology. Only after the results have been obtained can conclusions be drawn as to whether sampled (interior) areas are possibly contaminated with asbestos so that further necessary measures can be taken. <\/p>\n\n\n\n

The GSA measuring devices SG12<\/a> <\/strong>can be used stationary. It is not only suitable for measuring <\/strong>even low concentrations of asbestos fibers<\/strong>, but also for sampling <\/strong>other inorganic fibrous particles <\/strong>in accordance with VDI 3492 <\/strong>and ISO 14966 such as KMF. A sampling period of eight hours is sufficient according to VDI 3492<\/strong>. According to DGUV 213-546<\/strong>, a measurement can be taken at the workplace within two hours. The measuring device can also be used to measure the various dust fractions such as A-dust or E-dust. <\/p>\n\n\n\n


<\/p>\n\n\n\n

Asbestos in serpentinite rock: answers to five frequently asked questions<\/strong><\/h3>\n\n\n\n

1. How do you recognize whether a rock contains serpentinite asbestos?<\/strong><\/p>\n\n\n\n

    \n
  • The identification of asbestos in serpentinite requires special tests. A visual indication can be a fibrous structure in the rock, but a precise analysis is necessary.
    <\/li>\n<\/ul>\n\n\n\n

    2. Which specific processing methods can release asbestos fibers from serpentinite?<\/strong><\/p>\n\n\n\n

      \n
    • Cutting, drilling or grinding serpentinite can release asbestos fibers. It is important to take protective measures to minimize exposure.
      <\/li>\n<\/ul>\n\n\n\n

      3. Are there protective measures that people can take when working with or coming into contact with serpentinite?<\/strong><\/p>\n\n\n\n

        \n
      • When handling serpentinite, protective measures such as wearing respirators, safety goggles and suitable work clothing should be taken.
        <\/li>\n<\/ul>\n\n\n\n

        4. What health effects can be caused by asbestos fibers from serpentinite?<\/strong><\/p>\n\n\n\n

          \n
        • Asbestos can lead to serious lung diseases such as asbestosis and lung cancer. Long-term exposure is dangerous.
          <\/li>\n<\/ul>\n\n\n\n

          5. Are there alternative materials that can be used instead of serpentinite to minimize the risk of asbestos exposure?<\/strong><\/p>\n\n\n\n

            \n
          • Yes, there are alternatives such as marble, granite or other non-asbestos stones that can be used for similar purposes.<\/li>\n<\/ul>\n\n\n\n


            <\/p>\n\n\n\n

            Sources:<\/strong><\/p>\n\n\n\n

            Image source: 123rf.com \u00a9 vvoennyy , image no. 98664821<\/p>\n\n\n\n

            www.analyticalscience.wiley.com\/content\/article-do\/asbest—eine-gesellschaftliche-und-analytische-bestandsaufnahme<\/p>\n\n\n\n

            www.de.wikipedia.org\/wiki\/Z\u00f6blitzer_Serpentin<\/p>\n\n\n\n

            www.geodienst.de\/serpentinit.htm<\/p>\n\n\n\n

            www.baua.de\/DE\/Angebote\/Rechtstexte-und-Technische-Regeln\/Regelwerk\/TRGS\/TRGS-517.html<\/p>\n\n\n\n

            www.steine-und-minerale.de\/atlas.php?f=3&l=S&name=Serpentinit<\/p>\n\n\n\n

            www.suva.ch\/download\/regeln-und-tipps\/asbesthaltiger-serpentinit–lebenswichtige-regeln-fuer-die-bearbeitung\/asbesthaltiger-serpentinit–lebenswichtige-regeln-fuer-die-bearbeitung<\/p>\n\n\n\n

            www.de.wikipedia.org\/wiki\/Asbest<\/p>\n\n\n\n

            www.de.wikipedia.org\/wiki\/Serpentinit<\/p>\n","protected":false},"excerpt":{"rendered":"

            With the GSA measuring devices SG12 it is possible to collect asbestos fibers over a certain time and defined air volume with a fine filter for a sample<\/p>\n","protected":false},"author":3,"featured_media":9947,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[1089,1106,1074],"tags":[1090,1328,1108,1093,1327,1125,1326,1325,1105,1322,1323,1091,1324],"class_list":["post-10751","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-measuring-devices","category-occupational-safety","category-pollutants","tag-asbestos","tag-asbestos-fiber-concentrations","tag-asbestos-fibers","tag-gsa-measuring-device-sg12","tag-gsa-society-for-the-analysis-of-pollutants","tag-hazardous-substance","tag-sampling-of-inorganic-fibrous-particles","tag-scanning-electron-microscopy","tag-sem","tag-serpentinite","tag-serpentint-containing-asbestos","tag-sg12-en","tag-trsg517-en"],"yoast_head":"\nHarmful asbestos in serpentinite rock - blog.gsa-messgeraete.de<\/title>\n<meta name=\"description\" content=\"Asbestos fibers in indoor air can be measured with measuring device SG12. 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