urn:taro:tslac.40054 Wilson W. Crook III: An Inventory of Papers at the Texas State Archives, [ca. 1977] Finding aid by Laura K. Saegert, April 1981 This EAD finding aid was created in part with funds provided by the Texas Telecommunications Infrastructure Fund Board for the Texas Archival Resources Online project. Texas State Library and Archives Commission Text converted and initial EAD tagging provided by Apex Data Services, March 2001. Finding aid written inEnglish. August 2001. Corrections and further encoding to TARO project standards by Tonia J. Wood, Tue Jul 22 15:37:44 CDT 2003 urn:taro:tslac.40054 converted from EAD 1.0 to 2002 by v1to02.xsl (20030505). Overview Crook, Wilson, W. Papers [ca. 1977] Papers include a copy of Wilson W. Crook's professional paper, which describes the location and physical properties of the mineral texasite; two photographs of texasite and one photograph of himself; and a small specimen of the mineral. The paper and photographs date circa 1977. fractional, 3 photographs, 1 artifact English. Restrictions on Access

None.

 Restrictions on Use

Under the Copyright Act of 1976 as amended in 1998, unpublished manuscripts are protected at a minimum through December 31, 2002 or 70 years after the author's death. Researchers are responsible for complying with U.S. Copyright Law (Title 17 U.S.C.).

 Preferred Citation

(Identify the item), Wilson W. Crook III Papers. Archives and Information Services Division, Texas State Library and Archives Commission.

 Biographical Sketch

Wilson W. Crook III is a native Texan, graduating with a degree in geology (mineralogy) from Southern Methodist University. While working on his honor's thesis, he collected and studied rare-earth minerals from the Clear Creek pegmatite, located in Burnet County, Texas. After finishing his studies at Southern Methodist University, he entered the graduate school of mineralogy at the University of Michigan at Ann Arbor, Michigan. He continued his studies in the area of pegmatite by researching rare-earth minerals in the Central Mineral Region in and around Llano and Burnet counties, also referred to as the Barringer-Hill rare-earth pegmatite district. In 1975, while looking through specimens gathered while at Southern Methodist University, he discovered a new rare-earth element. Crystals of the mineral are small (0.1mm), translucent, and apple-green in color. He named the mineral texasite, after his native state of Texas.

 Scope and Contents of the Records

The collection consists of a copy of Wilson W. Crook III's professional paper, which describes the location and physical properties of the mineral texasite; two photographs of the mineral and one photograph of himself; and a small specimen of the mineral. Papers and photographs date circa 1977. The paper was possibly published in the American Mineralogist.

 Arrangement of the Records

These records are arranged by type of material.

 Index Terms

The terms listed here were used to catalog the records. The terms can be used to find similar or related records.

Personal Names: Crook, Wilson W. Subjects: Minerals--Texas. Texasite--Texas. Document Types: Professional papers--Texas--Texasite--[ca. 1977]. Photographs--Texas--Texasite--[ca. 1977]. Specimen--Texas--Texasite. Related Material

The following materials are offered as possible sources of further information on the agencies and subjects covered by the records in this finding aid. The listing is not exhaustive.

Texas State Archives

None. Processing Information

Laura K. Saegert, April 1981

 Accession Information

Accession number: 1977/139

This accession was received by the Texas State Archives from Wilson W. Crook III, on April 4, 1977.

 Detailed Description of the Records Papers, [ca. 1977], fractional, 3 photographs, and 1 artifact 1977/139-1 A paper on texasite, by Wilson W. Crook III, entitled Texasite, a new mineral: the first example of a differentiated rare-earth species. The paper has 10 pages and is of a technical nature. Artifact Box 35 Texasite specimen Photographs: 1977/139-1 This photograph is of a single crystal of texasite (yellow-green), mounted on a quartz fiber. The quartz fiber is about the diameter of a human hair and is 2mm long. The bump of the fiber is the glue which is holding the crystal. [3 × 5 color photograph.] 1977/139-2 This photograph is of a small (2mm across) radical grouping of texasite crystals, each crystal being like the one shown in the previous photograph. [3 × 5 color photograph.] 1977/139-3 This photograph is of Wilson W. Crook III, in the field. [5 × 7 color photograph.]