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  • mineral molecular model: amphibole (Si4O11)n chain
  • Images (3)

mineral molecular model: amphibole (Si4O11)n chain

  • Images (3)

mineral molecular model: amphibole (Si4O11)n chain

Date: 1960
Inventory Number: 2011-1-0019
Classification: Molecular Model
Subject:
chemistry, geology, mineralogy, harvard history, education, models,
Maker: Department of Geology and Geography, Harvard University (1890 - 1961)
Maker: Murph M. Slusher
Cultural Region:
United States,
Place of Origin:
Cambridge,
City of Use:
Cambridge,
Dimensions:
13 x 28.7 x 61.4 cm (5 1/8 x 11 5/16 x 24 3/16 in.)
Material:
wood, paper, plastic, metal,
Description:
This is a mineral molecular model of amphibole (Si4O11)n in a chain-like form. It is made of plastic brown/black, and orange spheres connected with brass rods and affixed to a plywood base that has been varnished dark reddish-brown. The base is badly stained, watermarked, and the edges are splintering.

The colors on the spheres represent the following elements:

black/brown= silicon

orange=oxygen (originally white)


Signedon card: (Si4O11)n/ Murph M. Slusher '60
Historical AttributesThis molecular model is part of a group in the Collection that were made by Harvard students for courses in geology and mineralogy between the early 1950s and the early 1970s. Some of the molecules were simple class assignments, whereas others are more complex and refer to recent publications. They remained in the Geology Department for display and instruction.
Curatorial RemarksBased on other molecular models made with the same type of plastic balls and which included an original color guide, the orange balls were originally white and aged to their present color through light exposure.
ProvenanceDepartment of Earth and Planetary Sciences, Spring 2011.
Related WorksAmphibole description in: Joseph Davidovits, Geopolymer chemistry and applications (Institut Géopolymère, Saint-Quentin, 2008), p.45. Google Book.

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