Crossword clues for greenstone
greenstone
The Collaborative International Dictionary
Greenstone \Green"stone`\ (gr[=e]n"st[=o]n`), n. [So called from a tinge of green in the color.] (Geol.) A name formerly applied rather loosely to certain dark-colored igneous rocks, including diorite, diabase, etc.
Wiktionary
n. 1 (context archaeology English) any of several green-hued minerals used for making various artefacts in early Mesoamerican cultures, e.g. greenschist, chlorastrolite, serpentine, omphacite, or chrysoprase 2 (context New Zealand English) the green-hued minerals of New Zealand used by Maori to make tools, ornaments and weapons (any of three varieties of nephrite jade or one variety of bowenite)
Wikipedia
Greenstone is a name given to several different types of minerals and rocks.
- Pounamu, a form of green nephrite jade found in the South Island of New Zealand
- Chlorastrolite, found in the Keewenaw Peninsula of Michigan and Isle Royale in the US
- Elvan, a quartz-porphyry found in Cornwall, UK
- Greensand, glauconite bearing sandstone and a geologic formation in the UK
- Greenschist, metamorphosed mafic volcanic rock and a metamorphic facies
- Greenstone (archaeology), a type of stone used by early cultures, particularly in Mesoamerica
- Greenstone belt, Archean and Proterozoic volcanic–sedimentary rock sequences
Greenstone may also be:
- Greenstone, Ontario, a municipality in Canada
- Greenstone (software), an open source digital library software package
- The Greenstone Building, a Canadian federal government office building in Yellowknife
- Greenstone River, river in the Otago/Southland region, New Zealand
Greenstone is a suite of software tools for building and distributing digital library collections on the Internet or CD-ROM. It is open-source, multilingual software, issued under the terms of the GNU General Public License. Greenstone is produced by the New Zealand Digital Library Project at the University of Waikato, and has been developed and distributed in cooperation with UNESCO and the Human Info NGO in Belgium.
The developers of Greenstone received the International Federation for Information Processing's 2004 Namur Award for "contributions to the awareness of social implications of information technology, and the need for an holistic approach in the use of information technology that takes account of social implications."
Greenstone may be used to create large, searchable collections of digital documents. In addition to command line tools for digital collection building, Greenstone has a graphical Greenstone Librarians Interface (GLI) used to build collections and assign metadata.
Through user selected plugins, Greenstone can import digital documents in formats including text, html, jpg, tiff, MP3, PDF, video, and Word, among others. The text, PDF, HTML and similar documents are converted into Greenstone Archive Format (GAF) which is an XML equivalent format.
A project on SourceForge was created in October 2005 for version 3 of Greenstone. In 2010, Greenstone version 2.83 was included, along with the Koha Integrated Library System, in an Ubuntu Live-Cd.
Greenstone is a common generic term for valuable, green-hued minerals and metamorphosed igneous rocks and stones which early cultures used in the fashioning of hardstone carvings such as jewelry, statuettes, ritual tools, and various other artefacts. Greenstone artefacts may be made of greenschist, chlorastrolite, serpentine, omphacite, chrysoprase, olivine, nephrite, chloromelanite among other green-hued minerals. The term also includes jade and jadeite, although these are perhaps more frequently identified by these latter terms. The greenish hue of these rocks generally derives from the presence of minerals such as chlorite, hornblende, or epidote.
Greenstone minerals were presumably selected for their color rather than their chemical composition. In archaeology therefore, having a loosely applied general term is at least partially influenced by the observation that ancient cultures often used and considered these various green-hued materials as interchangeable. Greenstone objects are often found very considerable distances from the source of the rock, indicating early travel or trading networks. A polished jadeite axe head in the British Museum (4000-2000 BCE) was found in Canterbury, Kent but uses stone from the Alps of Northern Italy, and objects from other parts of the world had travelled comparable distances to their findspots.
Ancient China and Mesoamerica have especial reputations for the prevalence and significance of greenstone (particularly jade) usage. Greenstones also figure prominently in the indigenous cultures of southeastern Australia, and among the Māori of New Zealand (who knew greenstone as pounamu). Neolithic Europe also used greenstone, especially for prestige versions of axe tools, not made for use; comparable jade versions of tools and weapons also appeared in the Olmec and other Pre-Columbian cultures and in early Chinese civilization.
Usage examples of "greenstone".
The surrounding islands all consist of conical masses of greenstone, associated sometimes with less regular hills of baked and altered clay-slate.
Elizabeth, tearful and broken, had headed directly for the comfort of her Mother, both assum'd into a silent unapproachable cloud of mourning, the boys being left each to his own way of soldiering on, the Enemy who'd so unanswerably insulted them at their Backs now some where, and in and out of their sleep George got busier than he had to be with one Scheme and another, pulling Greenstone out of the Dyke under Cockfield Fell, carving and fitting together stalks of Humlock for another of his Gas-pipe Schemes, re-designing the Spur-gearing or the Pump-seals out at the Workings.
The continents showed up in his images as black and dark islands in glowing oceans, the ancient granite cratons surrounded by crumpled greenstone.
Tabitha was normally very strict about keeping Greenstones in the Hold after dark.
Lydie was the closest thing to a friend she had among the other Greenstones, but there was no way she could talk to Lydie about something like this.
He looked out of the corner of his eye and saw two adolescent Greenstones standing not far away, half-concealed behind a tree-trunk, peering at him with round eyes.
There had not been a prisoner in there for years, and young Greenstones sometimes whispered that those rooms were haunted.
I did not advance to spill the greenstones onto his lap table as I might have done had his attitude been welcoming, but held the best on the palm of my hand in the full light of the room.
Collecting greenstones on the island was illegal but off shore the practice was allowed.