Moeraki Boulder

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34 results. Displaying results 1 - 34.

Name/title	Production date	Description
Moeraki Boulder		Small Moeraki boulder. Moeraki boulders are concretions. They are known in te reo Maori as Te Kaihinaki. This specimen may be from the Katiki Beach area, Otago.
Oamaru stone section		Section of cut Oamaru stone. Oamaru stone in known to geologists at Ototara limestone. It is commonly used as a building stone in the Waitaki District. Two faces of this section display natural weathering, with a third having been cut with a saw to display the white Oamaru stone.
Kakanui Mineral Breccia		A sample of mineral breccia from Kakanui, Otago.
Fragments of rostra (or beaks) of dolphin		Fossil material from the McNeur collection.
Fossil Coral		Scleration corals in greensand. Flabellum.
Fossil Echinoid		Fossil echinoid. ? pericosmos.
Fossil Brachiopods		2 Brachiopod fossils. Pachymagas huttoni.
Fossil Rhodolith Section		Fossil rhodoliths within McDonald Limestone. The specimen has been cut to show the rhodoliths.
Fossil Rhodolith		A whole fossilised rhodolith, resembles a ball. Rhodoliths are a red algae.
Half Fossilised Rhodolith		Half a fossilised rhodolith, cut down the middle to show a cross section. Fossil is round and golf ball-like. The rhodolith seems to have formed around a shell fragment.
Petrified Wood		A section of petrified wood. From Livingstone, Otago.
Fossil Scallop Shell in Limestone Block		Block of limestone recovered from the Queen's Hotel (Brydone), Thames Street, Oamaru. The block is spilt in to two pieces and contains a fossil scallop shell. Serripecten species.
Fossil Shell		Fossil shell from Ardgowan. Spinomelon parki.
Fossil Shell		Fossil scaphopod shell. Dentalium.
Limestone with Bryozoan Fossils		A piece of limestone with clearly visible bryozoan fossils.
Petrified Wood		A section of fossil wood. It shows tunnels from teredo borings. From Five Forks, Kauru formation.
Obsidian		A piece of obsidian which is a naturally occurring volcanic glass. From Tuhua (Mayor Island).
Diatomite		Diatomite specimen. Locality unrecorded.
Lime Product Sample Agricultural Lime	Circa 1970s	A glass jar with a white metal lid containing white powder. The typewritten label reads: Sample of agricultural lime, calcium carbonate CaCO3 From Taylor's Lime Co. Ltd, Weston. Employs seven men. Quarries and crushed approximately 65,000 tons limestone annually. Sells approximately 50,000 tons of output for agricultural purposes and 15,000 tons of output for industrial use - to McDonald's Oamaru Lime Ltd.
Lime Product Sample Quicklime	Circa 1970s	A glass jar with a metal lid containing white powder. The typewritten label reads: Sample burnt lime or quicklime. Calcium oxide CaO. From McDonald's Oamaru Lime Ltd. Weston. Employs fourteen men. Calcium Carbonated is crushed and mixed with coal and the powder pelletised and then burnt. The coal is burnt out of the pellet and removed CO2 (Aat 950oC) reducing calcium carbonate to calcium oxide. Burnt lime is used for mortar mixes and plastering, and in the manufacture of steel. Approx. 1000-1500 tons are used as burnt lime. Balance of production is converted by addition of water to become hydrated lime.

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34 results. Displaying results 1 - 34.