Waldemar Theodore Schaller

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Waldemar Theodore Schaller
Born(1882-08-03)August 3, 1882
Oakland, California, USA
DiedSeptember 28, 1967(1967-09-28) (aged 85)
Washington, D.C., USA
EducationUniversity of California
University of Munich
Scientific career
InstitutionsUnited States Geological Survey
ThesisBeitrag zur Kenntnis der Turmalingruppe
Doctoral advisorPaul Heinrich von Groth

Waldemar Theodore Schaller (August 3, 1882 – September 28, 1967) was an American mineralogist and longtime employee of the United States Geological Survey (USGS).[1]

Education and career[edit]

Schaller is the son of Theodore P. Schaller and Eliza Bornernan Schaller. He first received basic knowledge in the field of chemistry from his father before he began his studies at the University of California. After receiving his bachelor's degree in 1903, he got a job with the USGS as an assistant chemist.

On March 1, 1912, Waldemar Schaller resigned from his job at the USGS for a while so that he and his wife, Mary Ellen Boyland, could visit a number of museums in Europe and talk to the mineralogists in charge there. In June of the same year he received his doctorate in philosophy in Munich under Professor Paul Heinrich von Groth for his study of the tourmaline group.

From 1944 to 1947, Schaller was executive director of the USGS Chemistry and Physics Division. After working for the USGS for more than 60 years, Schaller became seriously ill in 1965 and finally died two years later at the Mar Salle Nursing Home in Washington, D.C.[2]

Research highlights[edit]

Schaller's contributions to mineralogy were numerous and covered a wide range of subjects. Most notable, however, is his conclusion that water or hydroxyl is an essential component of tremolite, which subsequently led to a new interpretation of the composition and structure of all amphiboles. Likewise, his studies on the paragenesis of salt minerals and their deposits in New Mexico and Texas from the Permian period were groundbreaking for the British mineralogists and their later investigations of the English evaporites of the same age.[1]

Schaller is considered the first to describe over 40 new minerals. Already in 1905 he described the purpurite together with Louis Caryl Graton.[3]

In 1912, three more mineral descriptions followed: hydroxyapatite,[4] sicklerite and stewartite,[5] and four more mineral descriptions in one year in 1915: bisbeeite,[6] fernandinite, minasragrite and shattuckite,[7] although bisbeeite was discredited by the CNMMNC in 1977 as being identical to chrysocolla following more recent investigations.

With kernite,[8] a rare but important ore for the production of boron was added in 1927, In 1950, the silicate miserite[9] followed in a corrective description and in 1958, together with Angelina C. Vlisidis, described the ajoite.[10]

Although the mineral crandallite was already known by B. Kosmann in 1869, it was only in 1927 by Gerald Francis Loughlin and Schaller that it received an exact analysis and its final name.[11]

Honors and awards[edit]

Schaller was elected to the American Academy of Arts and Sciences in 1919.[12] He was a member of the Mineralogical Society of America, where he was treasurer from 1930 to 1940, vice president in 1921 and president in 1926. He was also Vice President (1934) and President (1935) of the Geological Society of Washington, and Vice President 1936-1937 of the Washington Academy of Sciences. Outside America he was a member of the Mineralogical Society of Great Britain and Ireland, the German Mineralogical Society and the Mineralogical Society of Austria. He was also a member of the Sigma Xi scientific association and the Cosmos Club.[1]

In 1925, a mineral described by Gage, Larsen, and Vassar was named schallerite in his honor.[13][14]

He received numerous awards throughout his career, including the following

Bibliography[edit]

Waldemar Schaller's bibliography includes around 300 writings and works, among others:

  • 1909: The mercury minerals from Terlingua, Texas
  • 1914: Colorado ferberite and the wolframite series
  • 1916: Cassiterite in San Diego County, California
  • 1930: Borate minerals from the Kramer district Mohave Desert, California
  • 1932: The crystal cavities of the New Jersey zeolite region und Mineralogy of drill cores from the potash field of New Mexico and Texas

External links[edit]

  • Joseph J. Fahey: Memorial of Waldemar Theodore Schaller, in: The American Mineralogist, VOL. 54, MARCH-APRIL 1969 (PDF 357,8 kB)
  • Marjorie Hooker: Bibliography of Waldemar Theodore Schaller (bis 1953), U.S. Geological Survey, Washington, D.C. (PDF 583,8 kB)

References[edit]

  1. ^ a b c "Roebling Schaller". www.minsocam.org. Retrieved 2023-09-13.
  2. ^ Fahey, Joseph J. (1969). "Memorial of Waldemar Theodore Schaller1: August 3, 1882-September 28, 1967". American Mineralogist.
  3. ^ Louis Caryl Graton, Waldemar T. Schaller: Purpurite, a new mineral, in: American Journal of Science, Series 4 Vol. 20, August 1905, S. 146–151, doi:10.2475/ajs.s4-20.116.146
  4. ^ Waldemar T. Schaller (1912): Mineralogical notes, Series 2. Mineralogy of the French phosphorites, in: U.S. Geological Survey Bulletin, Vol. 509, S. 89–100 (PDF 430,8 kB)
  5. ^ Waldemar T. Schaller (1912): New manganese phosphates from the gem tourmaline field of Southern California, in: Journal of the Washington Academy of Sciences, Vol. 2, S. 143–145 (PDF 223 kB)
  6. ^ Mindat - Bisbeeite
  7. ^ Waldemar T. Schaller (1915): Four new minerals, in: Journal of the Washington Academy of Sciences, Vol. 5, S 7 (PDF 55,5 kB)
  8. ^ Waldemar T. Schaller (1927): Kernite, a new sodium borate, in: American Mineralogist, Vol. 12, S. 24–25 (PDF 141,1 kB)
  9. ^ Waldemar T. Schaller: Miserite from Arkansas; a renaming of natroxonotlite. In: American Mineralogist. (1950), Vol. 35, S. 911–921 (PDF 656,4 kB)
  10. ^ Waldemar T. Schaller, Angelina C. Vlisidis (1958): Ajoite, a new hydrous aluminum copper silicate, in: American Mineralogist, Volume 43, S. 1107–1111 (PDF 290,7 kB)
  11. ^ G. F. Loughlin, W. T. Schaller (1917): Crandallite, a new mineral, in: American Journal of Science, Vol. 43, S. 69–74 (PDF 299 kB)
  12. ^ "Waldemar Theodore Schaller". American Academy of Arts & Sciences. 2023-02-09. Retrieved 2023-09-13.
  13. ^ John W. Anthony, Richard A. Bideaux, Kenneth W. Bladh, Monte C. Nichols: Schallerite, in: Handbook of Mineralogy, Mineralogical Society of America 2001 (PDF 62,5 kB)
  14. ^ Mindat - Schallerite
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