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veatchite

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Journal Article
Published: 01 April 1979
American Mineralogist (1979) 64 (3-4): 362–366.
...I. Kumbasar Abstract A third modification of veatchite occurs in Emet colemanite deposit, Kütahya, Turkey, as white cauliflower-shaped nodules associated with colemanite, hydroboracite, realgar, orpi-ment and montmorillonite. The new mineral is triclinic, space group A 1 or A 1 ; a = 20.80, b...
Journal Article
Published: 01 December 1971
American Mineralogist (1971) 56 (11-12): 1934–1954.
...Joan R. Clark; C. L. Christ Abstract Crystal-structure analysis of veatchite reveals that its correct chemical formula is 4SrO·11B 2 O 3 ·7H 2 O, in good agreement with a 1950 analysis by Switzer and Brannock. Veatchite is monoclinic, Aa , a = 20.860 ± 0.005, b = 11.738 ± 0.003, c = 6.652 ± 0.002...
Journal Article
Published: 01 December 1960
American Mineralogist (1960) 45 (11-12): 1221–1229.
...Joan R. Clark; Mary E. Mrose Abstract Comprehensive single-crystal x -ray precession studies on type material of two strontium borate hydrates, veatchite (Switzer, 1938; Switzer and Brannock, 1950; Clark el at ., 1959) and p -veatchite (Braitsch, 1959), show that despite striking similarities...
Journal Article
Published: 01 April 2012
American Mineralogist (2012) 97 (4): 489–495.
...Joel D. Grice; Allan Pring Abstract Crystal structures of the three polytypes of veatchite, Sr 2 B 11 O 16 (OH) 5 ·H 2 O, are determined by X-ray, single-crystal studies. The polytypes are: veatchite-1 A , triclinic space group P 1̄, with a = 6.6378(6), b = 6.7387(6), c = 20.982(2) Å, α = 87.860(1...
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Journal Article
Published: 01 December 1959
American Mineralogist (1959) 44 (11-12): 1141–1149.
...Joan R. Clark; Mary E. Mrose; A. Perloff; G. Burley Abstract Veatchite is a hydrated strontium borate originally described by Switzer (1938). In the present study x -ray precession patterns have been correlated with crystal habit and indices of refraction to yield the following data: monoclinic...
Journal Article
Published: 01 October 1956
American Mineralogist (1956) 41 (9-10): 689–700.
...Henry Kramer; Robert D. Allen Abstract Complete chemical analyses have been made on six specimens to clarify existing uncertainties in the formulas of bakerite, priceite, and veatchite. Previously published formulas are corroborated for all three minerals. Optical measurements clear up several...
Journal Article
Published: 01 February 1950
American Mineralogist (1950) 35 (1-2): 90–92.
...George Switzer; W. W. Brannock Abstract Veatchite was described in 1938 as a hydrous calcium borate, 2CaO · 3B 2 O 3 · 2H 2 O, a lower hydrate of the colemanite-inyoite series. Reinvestigation shows that it is a strontium borate with the probable formula 3SrO · 8B 2 O 3 · 5H 2 O. Copyright © 1950...
Journal Article
Published: 01 February 1939
American Mineralogist (1939) 24 (2): 130–135.
...Joseph Murdoch Abstract Some terminated crystals of veatchite, the newly discovered borate from Lang, California, have been measured on the goniometer, the elements calculated, and fourteen forms observed. Using the published x -ray determination of the unit cell, the elements are: a:b:c: =0.163:1...
Journal Article
Published: 01 June 1938
American Mineralogist (1938) 23 (6): 409–411.
...George Switzer Abstract Veatchite, Ca 2 B 6 O 11 .2H 2 O 1 , is a new mineral from Lang, California. It is monoclinic, with lattice constants a 0 = 6.72Å, b 0 = 41.26Å, c 0 = 41.2OÅ,β = 67°. Perfect {010} and imperfect {001} cleavages; H = 2, G = 2.69. Biaxial, positive; Z: c [001]= ∔38°, Y = 6[010...
Image
<span class="search-highlight">Veatchite</span> polytypes showing the layered aspect perpendicular to the long ax...
Published: 01 April 2012
Figure 1 Veatchite polytypes showing the layered aspect perpendicular to the long axis. Boron in triangular coordination with oxygen is a darker shade than that of boron in tetrahedral coordination. The layer type, A or B , is indicated as is the directional aspect, + for up and − for down
Image
Structure topologies of volkovskite (a) and <span class="search-highlight">veatchite</span>-1 A  (b). The topolog...
Published: 01 February 2013
Fig. 6 Structure topologies of volkovskite (a) and veatchite-1 A (b). The topologies only show large, low-valence cations and boron atoms.
Image
Structure topologies of volkovskite (a) and <span class="search-highlight">veatchite</span>-1 A  (b). The topolog...
Published: 01 February 2013
Fig. 6 Structure topologies of volkovskite (a) and veatchite-1 A (b). The topologies only show large, low-valence cations and boron atoms.
Image
Net topology diagram for ( a ) volkovskite and ( b ) <span class="search-highlight">veatchite</span>-1 A . The la...
Published: 01 April 2012
Figure 4 Net topology diagram for ( a ) volkovskite and ( b ) veatchite-1 A . The layer type, A or B , is indicated as is the directional aspect, + for up and − for down.
Image
Photograph of <span class="search-highlight">veatchite</span> plates (total width of field of view12 mm) from the...
Published: 01 October 2005
F ig . 15. Photograph of veatchite plates (total width of field of view12 mm) from the Penobsquis deposit. Photograph by L. Horváth.
Journal Article
Published: 01 April 1972
American Mineralogist (1972) 57 (3-4_Part_1): 381–396.
..., the other two being the dimorphic pair, veatchite and p -veatchite, Sr 2 [B 5 O 8 (OH)] 2 .B(OH) 3 .H 2 O, recently solved, respectively, by Clark and Christ and by Rumanova and Gandymov. The structure of a synthetic compound, K 2 B 5 O 8 (OH).2H O , solved by Marezio, has polyanion sheets similar to those...
Journal Article
Published: 01 October 2005
The Canadian Mineralogist (2005) 43 (5): 1469–1487.
...F ig . 15. Photograph of veatchite plates (total width of field of view12 mm) from the Penobsquis deposit. Photograph by L. Horváth. ...
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Journal Article
Published: 01 February 2013
The Canadian Mineralogist (2013) 51 (1): 157–169.
...Fig. 6 Structure topologies of volkovskite (a) and veatchite-1 A (b). The topologies only show large, low-valence cations and boron atoms. ...
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Journal Article
Published: 01 April 2014
Mineralogical Magazine (2014) 78 (2): 235–252.
...’ patterns are well established. The technique used here is that described in detail by Rowe et al. ( 2014 ) for veatchite polytypes. μXRPD has the advantage of equipment availability, the need for only a few mg of material, speed of identification and negation of the ‘twinning’ problem outlined above...
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Journal Article
Published: 01 June 2005
The Canadian Mineralogist (2005) 43 (3): 1019–1026.
... (%) for each mineral are: hilgardite (0.33, 60), strontioginorite (0.20, 43), trembathite (0.38, 86), volkovskite (0.23, 54), hydroboracite (0.37,66) and veatchite (0.25, 40). Applying these numbers to the relevant pH – log[H 2 O] activity–activity diagram covers a large proportion of the range of pH and log[H...
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Journal Article
Published: 01 February 2003
The Canadian Mineralogist (2003) 41 (1): 234–235.
... (structural variety) with individual names, such as orthochamosite, are given. Some chemical varieties are given, such as the intermediates (albite to anorthite) in the plagioclase series. Most polymorphs (mineral species) are given as a separate entry, except P -veatchite, gersdorffite- Pa 3, gersdorffite...