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Hematite (/ ˈ h iː m ə ˌ t aɪ t, ˈ h ɛ m ə-/), also spelled as haematite, is a common iron oxide compound with the formula, Fe 2 O 3 and is widely found in rocks and soils. [6] Hematite crystals belong to the rhombohedral lattice system which is designated the alpha polymorph of Fe 2 O 3. It has the same crystal structure as corundum ...
The islands have become highly noted for their flora and fauna, attracting ecotourists. One endemic, the Chatham Islands forget-me-not (Myosotidium hortensia), has become a botanical symbol of the islands due to its widespread cultivation in and outside New Zealand. [3] [2] The Chatham archipelago comprises 40 islands and rocks.
In 1986, California named benitoite as its state gemstone, a form of the mineral barium titanium silicate that is unique to the Golden State and only found in gem quality in San Benito County. [ 80 ] ^ Colorado is the only state whose geological symbols reflect the national flag's colors: red (rhodochrosite), white (yule marble), and blue ...
Gemstones of the World revised 5th edition, 2013 by Walter Schumann ISBN 978-1454909538 Smithsonian Handbook: Gemstones by Cally Hall, 2nd ed. 2002 ISBN 978-0789489852 hide
Hematite, an iron-ore containing mineral, is so abundant on the island (and especially in the Wabana Group) that Bell Island has one of the highest concentrations of that mineral in the world. [91] [152] The hematite causes the rock to have a red to reddish-brown colour in many places. [12]
Much of the area of the southern islands has been modified for coconut plantations, altering the vegetation from the pre-settlement era. North Keeling, about 25 kilometres (16 mi) to the north, has been protected as part of the Pulu Keeling National Park, where 31 plants can be found, of which six are introduced. About half of the species on ...
Stroll hand in hand through New Orleans’ Garden District, with its shady lanes, charming streetcars, and historic homes, or head to Audubon Park and picnic beneath the towering trees dripping ...
The percentage of endemic species of the islands is very small. Humans introduced numerous species, either by their uses, by being edible or by ornamentation. From Tonga and Samoa came the first human beings to the islands, specifically to the Marquesas Islands, in the year 300 AD approximately. The following migratory waves were established in ...