den Brok, Bas, Passchier, Cees, Sieber, Michel (1998) Fibre growth in wet salt aggregates in a temperature gradient field. Mineralogical Magazine, 62 (4) 527-532 doi:10.1180/002646198547792
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Fibre growth in wet salt aggregates in a temperature gradient field | ||
| Journal | Mineralogical Magazine | ISSN | 0026-461X |
| Authors | den Brok, Bas | Author | |
| Passchier, Cees | Author | ||
| Sieber, Michel | Author | ||
| Year | 1998 (August) | Volume | 62 |
| Issue | 4 | ||
| Publisher | Mineralogical Society | ||
| Download URL | https://rruff.info/doclib/MinMag/Volume_62/62-4-527.pdf+ | ||
| DOI | doi:10.1180/002646198547792Search in ResearchGate | ||
| Generate Citation Formats | |||
| Mindat Ref. ID | 302 | Long-form Identifier | mindat:1:5:302:9 |
| GUID | 0 | ||
| Full Reference | den Brok, Bas, Passchier, Cees, Sieber, Michel (1998) Fibre growth in wet salt aggregates in a temperature gradient field. Mineralogical Magazine, 62 (4) 527-532 doi:10.1180/002646198547792 | ||
| Plain Text | den Brok, Bas, Passchier, Cees, Sieber, Michel (1998) Fibre growth in wet salt aggregates in a temperature gradient field. Mineralogical Magazine, 62 (4) 527-532 doi:10.1180/002646198547792 | ||
| Abstract/Notes | Abstract Intense fibrosity develops in wet porous NaCl crystal aggregates (grain size 250–500 µm) held in a temperature (T) gradient field (0.5–4°C/mm) at temperatures between 20 and 50–60°C. In situ microscopic observation of the process shows that fibre growth is associated with T-gradient driven motion of tiny gas (air, water vapour) bubbles present in the saturated intercrystalline aqueous NaCl solution. Gas bubbles move through the intercrystalline pore fluid into the cold direction. They only move if they are next to an NaCl crystal; bubbles that are ‘free’ do not move. Each bubble is ‘pushed’ into the cold direction by a growing crystal fibre of the same diameter as the bubble itself. Fibres apparently grow due to oversaturation of the NaCl solution at the hot side of the gas bubble. Crystals dissolve at the cold side of the gas bubbles, apparently by undersaturation of the NaCl solution there. Thus, bubbles dissolve their way through NaCl-crystals and aggregates. Intense fibrosity develops within weeks. | ||
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