Data Releases

Oxidation state and bonding environment of Ge and Cu in ZnS and Zn mineral concentrates from a variety of sources [Central Tennessee mining district (TN), Metaline mining district, (WA), and Red Dog mine (AK)] were determined by linear combination fits from x-ray absorption spectroscopy (XAS) analysis. Sphalerites from the East Tennessee mining district contained Ge in concentrations that were too

Germanium (Ge) is an element deemed critical globally, and used in electronics, communication, and defense applications. The supply of Ge is limited and as demand for it increases, its criticality increases. Germanium is exclusively recovered as a byproduct of either coal mining or zinc (Zn) mining, and the main mineral hosting Ge in Zn deposits is sphalerite (ZnS). However, the mechanisms of Ge e

This data release contains new Earths gravity data from the Sopori Wash sub-basin in Pima and Santa Cruz Counties, Arizona. Data were acquired in January and March of 2017.

The surface of the moon is heterogeneous. The differences from area to area of characteristic topographic forms and of physical properties such as albedo (reflectivity under full-Moon illumination) indicate that the materials underlying the surface vary from one area to another and that different processes have operated in the development of the surface. In lunar geologic mapping, areas are deline

This map is one of a series prepared from photographs transmitted by Ranger IX (Jet Propulsion Lab, 1966, pls A56-58, B70-82). It depicts the geology of some 724 sq km in the northeast part of the floor of Alphonsus (Diameter about 115 km), a typical flat-floored old terra crater or basin with a subdued rim. Similar basins abound in the south central terrae of the visable hemisphere and on the far

This 1:50,000 scale geolgic map is one of a series constructed at various scales from photographs trasmitted by the Ranger VII, VIII and IX spacecraft. The center of the map area is about 23 km southwest of the Ranger VIII (US Air Force Aeronautical Chart and Information Center Chart AIC 60C, Arago). In general, geologic maps of the moon portray similarities and differences in the characteristics

Material exposed on the surface of the moon is heterogenous. The albedo and other physical characteristics that have been determined with the use of optical and radio telescopes vary from one part of the moon from another, and the variations are partially correlated with differences in topography. Discontinuities in the areal variation permit the surface material to be divided up into map units, e

The surface of the moon is heterogenous. Similar surface materials are grouped into map units by means of telescope observations, study of lunar photographs, and photometric measurements. Each map unit has lateral continuity and limited range of physiographic characteristics and optical properties (mainly albedo, the reflectivity under full moon illumination). Such units are equivalent to the rock

The Sinus Iridum quadrangle includes the northwestern sector of Mare Imbrium, the Sinus Iridum embayment, the arcuate Montes Jura which partly surround Sinus Iridum, and several terra islands in the mare such as the Montes Teneriffe, Montes Recti, and C. Herschel. Mare Imbrium occupies a complex depression or basin consisting of an inner basin and several outer concentric troughs separated by rais

The Cassini quadrangle is in the north-central part of the nearside lunar disk and includes most of the northeast quadrant of Mare Imbrium. Lunar geologic units in the area have been distinguished according to topographic expression, albedo, and infrared stratigraphic relations, and the distribution of each unit is portrayed on the accompanying map. the nature and disposition of geologic units in

The surface of the Moon is heterogenous. Local surfaces can be classed on the basis of telescopic observations into units, each having a limited range of physical properties such as topography, visible under low illumination. The properties of such surface units are considered to represent properties of under lying materials, so that the surface units correspond to underlying rock units which are

Material exposed on the surface of the Moon is heterogeneous. The albedo and other physical characteristics that have been determined with the use of optical and radio telescopes vary from one part of the Moon to another, and the variations are particular correlated with differences in topography. Discontinuities in the areal variation permit the surface material to be divided into map units, each