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Related to anhydrite: apatite
ANDRAnhydrite (lithological term)
ANDRAdditional National Design Requirement
ANDRAdvanced Negotiation and Dispute Resolution Institute
References in periodicals archive ?
We expect the use of anhydrite and gypsum to continue to grow as farmers look to capitalize on the excellent crop enhancing and moisture retention attributes of these products.
Moreover, slight absorption anhydrite dicalcium ferrite at 1350[degrees]C took place, which is indicated by a change in intensity of the phase glandular analytical lines (d = 2,68; 2,72; 2,80; 3,68; 2,61 [Angstrom]).
1 Birdbear well in Dunn County reveal carbonate-evaporate cycles consisting of alternating mudstone and dolomudstone beds, and an anhydrite capping carbonate mudstone to wackestone.
The basal section of the Dashtak formation, which was formed throughout the lower, middle and upper parts of the Triassic period, is composed of argillaceous siltstone, shale and dolomite, with anhydrite interbeds.
Sea levels have risen and fallen over the millennia, and a slight sea-level fall can result in the original carbonate deposits being replaced by gypsum and anhydrite.
He won the seat in 1983, and one of his first campaigns was to fight plans to store nuclear waste in the former anhydrite mines underneath Billingham.
FlexiDry fast drying floor screeds come in a range of drying time from 3 days to 21 days, allowing construction projects to resume without the long delays that normal anhydrite screeds pose.
It is clearly noted that the anhydrite and the lime content in the ashes disappear quickly with the curing time.
Since anhydrite crystallized in the initial period of Schaller's sequence, quartz, datolite and prehnite pseudomorphs after anhydrite are found throughout zone 4.
Key words: anhydrite, gypsum, clay, rock, tunnel, swelling, ventilation.
Its monoclinic crystal lattice and flower-like clumps of needles are also the most common form in nature, and it is from rocks bearing anhydrite that water derives its hardness.
In its lower 3 m, the Eel Bed contains 1-3 cm structureless and vuggy beds intercalated with thinly-laminated (1-5 mm) layers of algal mats, anhydrite and dolomite.