A skip body mounted on nine or more oscillating, smooth, rubber-tired
wheels for compaction and fine rolling of soil. Nelson
A monoclinic mineral, (Ta,Nb,Sn,Mn,Fe)16 O32 ;
dimorphous with ixiolite; occurs in granite pegmatites; named for Wodgina,
Australia.
a. A monoclinic mineral, Ca2 NaZr(Si2 O7 )(O,OH,F)
2 .
b. The organic matter in carbonaceous chondrites. Also spelled woehlerite.
A fatigue test in which one end of a specimen is held in a chuck and
rotated in a ball bearing placed on the other end. The ball bearing
carries a weight and, as the specimen rotates, the stress at each point on
its surface passes through a cycle from a maximum in tension to a maximum
in compression. CTD
A range of hills produced by differential erosion from inclined
sedimentary rocks; a cuesta. CF:cuesta
a. The name of a naphtha-burning flame safety lamp. Jones, 1
b. The name of carbide and electric lamps.
A mineral (not established as a species), Ni(As,Sb)S , intermediate
between gersdorfite and ullmannite; occurs at Wolfach, Baden, Germany.
A monoclinic mineral, (Fe,Mn)2 (PO4 )(OH) ; forms a series
with triploidite; dimorphous with satterlyite.
While other nickel-cadmium batteries generally adopt either tubular or
pocketed positive plate construction, the Wolf battery has individual
features of interest. The supporting medium for the active materials
consists of strips of compressed corrugated nickel foil. The method of
construction is to perforate strips of the foil, which are pasted with
active material. The strips are folded into corrugations and compressed
into a cake. Two or more cakes are mounted in a pure nickel frame to form
the finished plate. This method of construction results in a plate of
satisfactory electrical conductivity, and no admixture of graphite or
flake nickel in the active material is necessary. Roberts, 2
A flotation process invented by Jacob D. Wolf in 1903. He used
sulfochlorinated or other oils and aimed to secure a high extraction with
a low grade of concentrate in the first step, and by washing with hot
water to concentrate the concentrate in a second step. Apparently no
commercial use was made of it. Liddell
See:wolframite; tungsten.
See:tungstite; tungstic ocher; wolframite.
A monoclinic mineral, (Fe,Mn)WO4 ; within the huebnerite-ferberite
series; pseudo-orthorhombic due to twinning. See also:tungsten
Syn:wolfram
A tungsten lamp. Webster 3rd
See:tungstic ocher
See:chalcostibite; jamesonite.
A triclinic mineral of the pyroxenoid group: CaSiO3 . It is
dimorphous with parawollastonite. Wollastonite is found in
contact-metamorphosed limestones, and occurs usually in cleavable masses
or sometimes in tabular twinned crystals; it may be white, gray, brown,
red, or yellow. It is not a pyroxene. Symbol, Wo. Syn:tabular spar
AGI
See:wollongongite
A coallike shale similar to torbanite. It is named from its type locality,
Wollongong, New South Wales, Australia. Also spelled wollongite;
wallongite. AGI
An orthorhombic mineral, (Pb,Ca)U2 O,.2H2 O ; forms bright
red crusts on fluorite; at Woelsendorf, Bavaria, Germany.