Mineralogy and History of The Borghese-Windsor Cabinet

Borghese-Windsor Cabinet, now on display at the Getty Center in Los Angeles, CA. Photo from the Getty Museum.
Example of Brazil agate analysis (NHMLA collection). Left: Hyperspectral image showing the intensity of the H2O abosrption band. Right: Regular photograph of the agate, with Raman map showing the distribution of quartz(white)and moganite(black,darkest areas are approximately 8% moganite). All the Brazilian agate from Rio Grande Du Sol had this characteristic pattern of high moganite content in the cherty out-bands. The inner, larger quartz crystal parts, had little to no moganite.
Example of German agate analysis (NMNH collection). Left: Hyperspectral image showing the intensity of the H2O abosrption band. Right: Regular photograph of the agate. Raman maps(notshown) indicated the presence of < 2% moganite at the highest concentration. All the German agates we analyzed had little to no moganite in the cherty outer bands. The inner, larger quartz crystal parts, also had little to no moganite.
Hyperspectral image showing the intensity of the H2O absorption band. Bright areas have more H2O and dark areas have less.
Color photograph of cabinet for comparison depicting the general area used for hyperspectral mapping. Photo from the Getty Museum.

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Aaron Celestian, Ph.D.

Aaron Celestian, Ph.D.

Keeping science accessible. Researching how minerals can be used to solve problems like climate change, pollution, and disease. @ NHMLA, USC, NASA-JPL