Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 16 July 1971:
Vol. 173. no. 3993, pp. 235 - 237
DOI: 10.1126/science.173.3993.235
Prev | Table of Contents | Next

Articles

Synthetic Calcareous Pseudomorphs Formed from Siliceous Microstructures

R. Ian Harker 1

1 Department of Geology, University of Pennsylvania, Philadelphia 19104

Individuals of the diatom Coscinodiscus have been treated hydrothermally in the presence of lime and carbon dioxide with the result that they have been pseudomorphed by calcite. The silica of the original diatoms has been replaced while the intricate reticulations of the alveoli have been preserved down to submicroscopic detail.

To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)