Calcitic nanofibres in soils and caves: a putative fungal contribution to carbonatogenesis - Tufas and Speleothems: Unravelling the Microbial and Physical Controls - page 226

Fig. 2. X-ray diffractogramme showing the low-magnesium calcite nature of (a) cotton-ball like NFC from the
Swiss Jura Mountains, (b) coatings on blocks fromSwiss JuraMountains and (c) moonmilk from the Vers chez le Brandt
cave in the Swiss Jura Mountains samples. Dotted lines correspond to the main peaks of low-magnesium calcite
(CaCO 3 ), the other peaks mainly correspond to quartz (quartz added prior to analysis to allow peak correction).