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Elbaite forms three series, with dravite, with fluor-liddicoatite, and with schorl. Due to these series, specimens with the ideal endmember formula are not found occurring naturally. As a gemstone, elbaite is a desirable member of the tourmaline group because of the variety and depth of its colours and quality of the crystals.
Fluor-liddicoatite is isostructural with (has the same structure as) all members of the tourmaline group, [3] which are cyclosilicates with the general formula XY 3 Z 6 (BO 3) 3 Si 6 O 18 (OH,O) 3 (OH,F). For fluor-liddicoatite, the X sites are occupied by Ca, the Y sites by Li or Al and the Z sites by Al, giving the formula Ca(Li 2 Al)Al 6 (BO ...
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Dispersion: 0.017 [1]: Ultraviolet fluorescence: Pink stones; inert to very weak red to violet in long and short wave [1]: Absorption spectra: Strong narrow band at 498 nm, and almost complete absorption of red down to 640 nm in blue and green stones; red and pink stones show lines at 458 and 451 nm, as well as a broad band in the green spectrum [1]
A depot injection, also known as a long-acting injectable (LAI), is a term for an injection formulation of a medication which releases slowly over time to permit less frequent administration of a medication.
Home Depot’s viral 12-foot skeleton lives up to the hype. Its oversized design makes for an eye-catching Halloween display, and once assembled, it’s surprisingly stable considering its size.
The Home Depot Pro, headquartered in Jacksonville, Florida, is a wholesale distributor and direct marketer of maintenance, repair and operations (MRO) products for non-industrial businesses in the United States.
Nov. 4—Moscow residents pressed Home Depot officials on matters like traffic, jobs and water use during a community meeting Friday in Moscow. In August, the Idaho State Board of Education ...