 | | Report (issue) | | NEW ZEALAND DEPARTMENT OF SCIENTIFIC AND INDUSTRIAL RESEARCH NEW ZEALAND GEOLOGICAL SURVEY 125th ANNIVERSARY...1865 -1990 NEW ZEALAND GEOLOGICAL SURVEY BULLETIN 104 ISSN 0077-9628 Minerals of New Zealand by G. L....initials should be G.T., not G.L. Lower Hutt, New Zealand 1990 I I Beach sand, alluvium, • terrace...Figure 1. Simplified geological sketch-map of New Zealand. 0 20 40 60 80 100 KM l INTRODUCTION It...Morgan's "Minerals and Mineral Substances of New Zealand" was published, as NZ. Geological Survey bulletin |  | | Book (volume) | | consistently applied; it is inevitable, however, that as new information is acquired and better understanding...sodium to pure potassium felspar corresponds to a region of unmixing, and the unmixing occurs on a coarser...result of heating orthoclase microperthites in the region 600°-1025°C. is an exchange of sodium and potassium...twinned in an (hOl) plane. Acceptance of this as a new twin law is particularly likely if the intermediate...pericline tAvins and each had an albite twin. The two new individuals would be related by the y axis of the |
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Mossburn, Southland District, Southland Region, New Zealand