Hostname: page-component-6bb9c88b65-x9fsb Total loading time: 0 Render date: 2025-07-25T13:22:15.712Z Has data issue: false hasContentIssue false
  • English
  • Français

Al-free gyrolite from the Lizard, Cornwall, England

Published online by Cambridge University Press:  05 July 2018

N. J. Elton ,
J. J. Hooper  and
V. A. D. Holyer
N. J. Elton
Affiliation:
Tregears, Little Treviscoe, St Austell, Cornwall PL26 7QL
J. J. Hooper
Affiliation:
48 St Julitta, Luxulyan, Bodmin, Cornwall PL30 5ED
V. A. D. Holyer
Affiliation:
The Cornerstone, 7 Tregonning Park, St Keverne, Helston, Cornwall TR12 6QT
Get access Rights & Permissions [Opens in a new window]

Abstract

Gyrolite containing no detectable Al (<0.04 wt.%) has been found as aggregates of platey crystals to 6 mm at Dean Quarry, the Lizard, Cornwall. The gyrolite occurs embedded in calcite which fills a fracture vein in gabbro. Paragenetic evidence is inconclusive, but suggests that gyrolite formed relatively early, after prehnite, and possibly around the same time as analcime and natrolite.

Keywords

zeolitegyroliteLizardCornwall

Information

Type
Research Article
Information
Mineralogical Magazine , Volume 62 , Issue 2 , April 1998 , pp. 271 - 272
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1998

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

Anderson, T. (1851) Description and analysis of gurolite, a new mineral species. Phil. Mag., 1, 111–13.CrossRefGoogle Scholar
Anthony, J.W., Bideaux, R.A., Bladh, H.W. and Nichols, M.C. (1995) Handbook of Mineralogy, vol. II, Silica, Silicates. (Mineral Data Publishing, Tucson).Google Scholar
Gard, J.A., Mitsuda, T. and Taylor, H.F.W. (1975) Some observation s on Assarsson's Z-phase and its structural relations to gyrolite, truscottite and reyerite. Mineral. Mag., 40, 325–33.CrossRefGoogle Scholar
Merlino, S. (1988) Gyrolite: its crystal structure and crystal chemistry. Mineral. Mag., 52, 377–87.CrossRefGoogle Scholar
Seager, A. (1969) Zeolites and other minerals from Dean Quarry, The Lizard, Cornwall. Mineral. Mag., 37, 147–8.CrossRefGoogle Scholar
Seager, A. (1971) Mineralisation and paragenesis at Dean Quarry, The Lizard, Cornwall. Trans. Roy. Geol. Soc. Corn., 20, pt 2, 97–113.Google Scholar
Seager, A. (1978) Paragenesis of hydrothermal mineralisation in amphibolites and granulites around Porthkerris Point, The Lizard, Cornwall. Mineral. Mag., 42, 109–11 and M49–59.CrossRefGoogle Scholar
Sukheswala, R.N., Avasia, R.K. & Gangopadhyay, M. (1974) Zeolites and associated secondary minerals in the Deccan Traps of western India. Mineral. Mag., 39, 658–71.CrossRefGoogle Scholar