NEW DESCRIPTIONS OF LARVAE OF FOREST INSECTS, VI, SEMIOTHISA, PARAPHIA, PROTOBOARMIA (LEPIDOPTERA, GEOMETRIDAE)

1943 ◽  
Vol 75 (7) ◽  
pp. 134-138 ◽  
Author(s):  
W. C. McGuffin
Keyword(s):  
Host Tree ◽  
Head Width ◽  
Green Body ◽  
Forest Insects ◽  
First Instar ◽  
Bluish Green ◽  
Light Green

Egg: Ovate in shape, bluish green in colour, the surface divided by reticulations into small hexagonal areas. Laid singly on the needles of host tree.First Instar: Head width 0.23 mm. Body 2.0 mm. in length and 0.23 mm. in width Brownish green body with light brown head.Second Instar: Head width 0.5 mm. Body 4.6 mm. in length and 0.5 mm. in width. Body lined alternately with green and light green stripes. Spiracular line greenish white. Head brownish green.

Paratacamite-(Mg), Cu3(Mg,Cu)Cl2(OH)6; a new substituted basic copper chloride mineral from Camerones, Chile

2013 ◽  
Vol 77 (8) ◽  
pp. 3113-3124 ◽  
Author(s):  
A. R. Kampf ◽  
M. J. Sciberras ◽  
P. Leverett ◽  
P. A. Williams ◽  
T. Malcherek ◽  
...  
Keyword(s):  
Copper Chloride ◽  
Secondary Phase ◽  
X Ray ◽  
Cell Parameters ◽  
Bluish Green ◽  
Perfect Cleavage ◽  
Mohs Hardness ◽  
The Village ◽  
Deep Green ◽  
Light Green

AbstractParatacamite-(Mg) (IMA 2013-014), Cu3(Mg, Cu)Cl2(OH)6, is the new Mg-analogue of paratacamite. It was found near the village of Cuya in the Camarones Valley, Arica Province, Chile. The mineral is a supergene secondary phase occurring in association with anhydrite, atacamite, chalcopyrite, copiapite, dolomite, epsomite, haydeeite, hematite, magnesite and quartz. Paratacamite-(Mg) crystals are rhombs and thick to thin prisms up to 0.3 mm in size exhibiting the forms {201} and {001}. Twinning by reflection on {10} is common. The mineral is transparent with a vitreous lustre, with medium to deep-green colour and light-green streak. Mohs hardness is 3–3½, the tenacity is brittle and the fracture is conchoidal. Paratacamite-(Mg) has one perfect cleavage on {201}. The measured and calculated densities are 3.50(2) and 3.551 g cm–3, respectively. The mineral is optically uniaxial (–) with ε = 1.785(5) and ω > 1.8 and slight pleochroism: O (bluish green) > E (green). Electron-microprobe analyses provided the empirical formula Cu3(Mg0.60Cu0.38Ni0.01Mn0.01)Cl2(OH)6. The mineral is easily soluble in dilute HCl. Paratacamite-(Mg) is trigonal, R, with cell parameters a = 13.689(1), c = 14.025(1) Å, V = 2275.8(3) Å3 and Z = 12. There is a pronounced sub-cell corresponding to a' ≈ ½a, c' ≈ c in space group Rm. The eight strongest lines in the X-ray powder diffraction pattern are [dobs Å(I)(hkl)]: 5.469(87)(021), 4.686(26)(003), 2.904(34)(401), 2.762(100)(22,042), 2.265(81)(404), 1.819(26)(603), 1.710 (34)(440) and 1.380(19)(446). The structure was refined to R1 = 0.039 for 480 Fo > 4σF reflections. Refinement using interlayer Mg-Cu site scattering factors indicated that Mg is distributed statistically between both interlayer octahedra M1O6 and M2O6. A comparison of the distortions associated with M1O6 and M2O6 octahedra suggest that the sample is near the upper compositional limit for stability of the R phase.

NEW DESCRIPTIONS OF LARVAE OF FOREST INSECTS, IV, HERCULIA, TORTRIX, AND ARGYROTAENIA (LEPIDOPTERA, PYRALIDAE AND TORTRICIDAE)

1942 ◽  
Vol 74 (4) ◽  
pp. 58-61 ◽  
Author(s):  
A. W. A. Brown ◽  
W. C. McGuffin
Keyword(s):  
Body Length ◽  
Head Width ◽  
General Shape ◽  
Ground Colour ◽  
Posterior Portion ◽  
Forest Insects ◽  
Lepidoptera Pyralidae

Penultimate Instar. Head width 1.4 to 1.7 mm. Body length about 7 mm. Otherwise similar to ultimate instar.Ultimate Instar. Head width 1.7 to 1.9 mm. Body about 17 mm. long and 2.5 mm. in width; fusiform in general shape, each segment divided by a transverse fold into a broader anterior and narrower posterior portion; skin closely covered with minute hexagonal pits; ground colour light greyish-brown, with five well-defined longitudinal lines, as follows: a narrow dark grey middorsal line fading posteriorly, two wide grey-brown subdorsal lines, and two interrupted brown supraspiracular lines; oblique outfolded ridges in subspiracular position, separated by deep, infolded wrinkles, which are darkly pigmented and bear irregularly scattered pits, one series of these wrinkles forming a fine interrupted suprapodal line, the venter light brown.

scholarly journals Nephrite of Bazhenovskoye Chrysotile–Asbestos Deposit, Middle Urals: Localization, Mineral Composition and Color

Minerals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1227
Author(s):  
Evgeniy V. Kislov ◽  
Yuriy V. Erokhin ◽  
Mikhail P. Popov ◽  
Anatoliy G. Nikolayev
Keyword(s):  
Mineral Composition ◽  
Middle Urals ◽  
Chrysotile Asbestos ◽  
Green Color ◽  
Ornamental Stone ◽  
Bluish Green ◽  
Light Green

In the Bazhenovskoye chrysotile–asbestos deposit (Middle Urals), nephrite bodies of the serpentinite type were found on the contact of after gabbro rodingites and serpentinites. The color is uniform to non-uniform, green to light green, bluish green, greyish green, and whitish. Spots, streaks, lenticules of bright bluish-green or, on the contrary, light green color are sometimes noted. The nephrite is mostly comprised of tremolite. Chromite decreases the quality of the ornamental stone, but it is replaced by chrome grossular, which gives the nephrite a brighter bluish-green color locally. Crushed grains of chromite contain increased concentrations of Zn and Mn. The quality of the nephrite is decreased by serpentine and talc, as well as by fractures due to drilling and blasting works. The specific feature of the nephrite in the Bazhenovskoye deposit is the formation of nickeline, maucherite, and uvarovite. The green color is associated with Fe2+ ions. The nephrite of the Bazhenovskoye deposit meets the requirements for an ornamental stone. The origin of this nephrite includes a combination of metasomatic and metamorphic processes.

Leverettite from the Torrecillas mine, Iquique Provence, Chile: the Co-analogue of herbertsmithite

2013 ◽  
Vol 77 (7) ◽  
pp. 3047-3054 ◽  
Author(s):  
A. R. Kampf ◽  
M. J. Sciberras ◽  
P. A. Williams ◽  
M. Dini ◽  
A. A. Molina Donoso
Keyword(s):  
Empirical Formula ◽  
New Mineral ◽  
Calculated Density ◽  
Cell Parameters ◽  
Conchoidal Fracture ◽  
Bluish Green ◽  
Perfect Cleavage ◽  
Mohs Hardness ◽  
Deep Green ◽  
Light Green

AbstractThe new mineral leverettite (IMA 2013-011), ideally Cu3CoCl2(OH)6, was found at the Torrecillas mine, Salar Grande, Iquique Province, Chile, where it occurs as a supergene alteration phase in association with akaganéite, anhydrite, chalcophanite, goethite, halite, manganite, pyrite, quartz and todorokite. Crystals of leverettite are steep rhombohedra to 1 mm with {101} prominent and modified by {001}, sometimes forming V-shaped twins by reflection on {10}. The crystals can also form finger-like, parallel stacked growths along the c axis. The new mineral is medium to deep green in colour and has a light green streak. Crystals are transparent with a vitreous lustre. Mohs hardness is ∼3 and the crystals have a brittle tenacity, a perfect cleavage on {101} and a conchoidal fracture. The measured density is 3.64(2) g cm–3 and calculated density based on the empirical formula is 3.709 g cm–3. Optically, leverettite is uniaxial (–) with ω and ε > 1.8 and exhibits pleochroism with O (bluish green) > E (slightly yellowish green). The empirical formula, determined from electron-microprobe analyses is Cu3(Co0.43Cu0.40Mn0.17Ni0.07Mg0.01)Σ1.08Cl1.87O6.13H6. Leverettite is trigonal (hexagonal), space group Rm, unit-cell parameters a = 6.8436(6) and c = 14.064(1) Å, V = 570.42(8) Å3, Z = 3. The eight strongest X-ray powder diffraction lines are [dobs Å (I)(hkl)]: 5.469(90)(101), 4.701(18)(003), 2.905(22)(021), 2.766(100)(113), 2.269(66)(024), 1.822(26)(033), 1.711(33)(220), 1.383(23)(128). The structure, refined to R1 = 0.023 for 183 Fo > 4σF reflections, shows leverettite to be isostructural with herbertsmithite and gillardite.

New data on ktenasite

1977 ◽  
Vol 41 (317) ◽  
pp. 65-70 ◽  
Author(s):  
G. Raade ◽  
C. J. Elliott ◽  
E. E. Fejer
Keyword(s):  
Chemical Formula ◽  
Space Group ◽  
Bluish Green ◽  
Cell Dimensions ◽  
Zinc Mine ◽  
Light Green

SummaryKtenasite from Glomsrudkollen zinc mine, Modum, Norway, is menoclinic, space group P21/c. The cell dimensions are a 5·598, b 6·121, c 23·762Å, β 95·55° The chemical formula is (Cu3·5Zn1·5)(SO4)2 (OH)6·6H2O with Z = 2; ρcale 2·96 g/cm3, ρobs 2·94 g/cm3. The mineral is biaxial negative with α (colourless) 1·574, β (bluish green) 1·615, γ (light green) 1·628, 2Vα 59°.

NEW DESCRIPTIONS OF LARVAE OF FOREST INSECTS, III, ZANCLOGNATHA, PALTHIS, AND AUTOGRAPHA, (LEPIDOPTERA, PHALAENIDAE)

1942 ◽  
Vol 74 (3) ◽  
pp. 52-56 ◽  
Author(s):  
A. W. A. Brown ◽  
W. C. McGuffin
Keyword(s):  
Body Length ◽  
Abdominal Segment ◽  
Head Width ◽  
Ground Colour ◽  
Pale Yellow ◽  
Forest Insects

Penultimate Instar. Head width 1.0 to 1.3 mm. Body length 7 to 10 mm. Otherwise similar to ultimate instar.Ultimate Instar. Head width 1.3 to 1.5 mm. Body from 9 to 11 mm. long and from 1.5 to 1.7 mm. wide; shape subcylindrical, broadest at first abdominal segment, eighth abdominal segment with a dorsal swelling; skin densely covered with minute conical granules; ground colour pale yellow, cream-coloured, or greyish-white, heavily mottled with dark brown, dark grey, or ruddy-brown, often with a pink suffusion, venter lightly tinged with reddish-brown or even green.

NEW DESCRIPTIONS OF LARVAE OF FOREST INSECTS; II, ANOMOGYNA (LEPIDOPTERA, PHALAENIDAE)

1942 ◽  
Vol 74 (2) ◽  
pp. 21-25
Author(s):  
A. W. A. Brown ◽  
W. G. McGuffin
Keyword(s):  
Head Width ◽  
Ground Colour ◽  
Forest Insects ◽  
Anterior Segments ◽  
Dark Green

Antepenultimate Instar. Head width 1.4 mm. Body about 13 mm. long and 2 mm. wide. Crochets on first abdominal proleg number 14 to 16.Penultimate Instar. Head width 1.7 to 2.0 mm. Body from 15 to 17 mm. long and about 2.5 mm. wide; ground colour medium to dark green, the moderately broad white dorsal line separated from the slightly broader white subdorsal lines by twice its width in ground colour; white patches, more conspicuous in anterior segments, immediately distad of each seta alpha; spiracular line dark green, subspiracular line white with a fringe of yellow.

Endometrial glandular and stromal breakdown, part 4: Cytomorphology of “condensed cluster of stromal cells including a light green body”

2010 ◽  
Vol 40 (3) ◽  
pp. 204-209 ◽  
Author(s):  
Yoshiaki Norimatsu ◽  
Miho Kawai ◽  
Akira Kamimori ◽  
Tsutomu Yuminamochi ◽  
Hiroyuki Ohsaki ◽  
...  
Keyword(s):  
Stromal Cells ◽  
Green Body ◽  
Light Green

Dispersal of the Pine Needle Scale, Phenacaspis pinifoliae (Fitch), (Diaspididae: Homoptera)

1958 ◽  
Vol 90 (11) ◽  
pp. 685-690 ◽  
Author(s):  
C. E. Brown
Keyword(s):  
Host Tree ◽  
Adult Males ◽  
Pine Needle ◽  
First Instar ◽  
Nursery Stock ◽  
Two Stages ◽  
Effective Spread

The dispersal of the pine needle scale has long been a problem to entomologists. Although its transfer on nursery stock has been accepted as a means of dispersal, the method of its spread from tree to tree in a localized area has not been investigated previously. There are two stages in its development when it is able to move about by its own volition: the crawler or first instar nymphs wander for short distances on the twigs of the host tree and the adult males move about freely. Effective spread of this scale occurs only in the crawler stage. Phoresy is unlikely because nymphs have extreme difficulty in crossing small gaps such as would be encountered in transferring from a needle to an insect or bird and parent scales do not secrete substances attractive to carriers as described by Mahdihassan (1933) for some lac-insects. Because of the limited motility of the first instar nymphs, dissemination by wind required investigation.

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