The effect of organic (acetic, oxalic, citric) and inorganic (hydrochloric, nitric, sulfuric) acids on the dissolution of ripidolite was studied at 25°C over an acid concentration range of 0.03 to 10 mM. The increasing ripidolite dissolution with increasing acid concentration can be described by the same empirical equation for all six acids used…
5.0 x 3.9 x 3.4 cm. Ripidolite is a variety of clinochlore, a chlorite group species. This fine Austrian specimen from the Rolf Wein Collections features a well-placed vug with lustrous, greenish-gray, tabular ripidolite blades to 1.0 cm. The piece is from the well-known Pfitsch Pass, Ziller Valley of Tyrol and Wein acquired the piece in 1968.
DOI: 10.1016/S0927-7757(96)03893-9 Corpus ID: 95204353; Surface properties of ripidolite and beidellite clays modified by high-energy ball milling @article{Sondi1997SurfacePO, title={Surface properties of ripidolite and beidellite clays modified by high-energy ball milling}, author={Ivan Sondi and Mirko Stubi{vc}ar and Velimir Pravdi{'c}}, journal={Colloids and Surfaces A: …
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The compositions of chlorite (usually pycnochlorite or ripidolite), sericite, and epidote (22 to 30 mole % pistacite) are not related to spatial position within alteration zones but reflect the initial chemical composition of the rock or mineral which they have replaced.
Trade name: Ripidolite (chlorite) Product code: CCa-2 Recommended use: Raw material Supplier: The Clay Minerals Society The Source Clays Repository 3635 Concorde Pkwy, Suite 500 Chantilly, VA 20151-1110 - United States of America T (703) 652-9960 cms@clays Issue date: 03/09/2020 2. Hazard(s) identification Classification: Physical hazards
The extensive development reservoir of grain-alteration chlorite, ripidolite and Pennine often appear in alluvial fan deposits, where the provenance is generally of volcanic rock. Grain coating and pore lining chlorite often appear in traction current deposits, such as the delta front.
The ripidolite endmember has vibrational bands at 2.25 and 2.35 µm positioned nearly symmetrically about either side of the 2.3 µm band in the nontronite endmember. In a mixture with 75% nontronite and 25% ripidolite, the 2.25 µm band appears as a shoul-der, the 2.35 µm is not visible, and the 2.3 µm Fe-OH
Ripidolite is a relatively rare variety of clinochlore, a chlorite group species. This old-time cabinet specimen features dark, greenish-gray ripidolite after sharp almandine garnet dodecahedrons set in greenstone matrix from the old Michigamme Iron Mine of Michigan. The pseudomoprhs reach 2.1 cm on this fine specimen.