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Wireless detector crystals: Copper Pyrites

A selection of crystals made from BSCCO superconductor

1997

crystals pulled from seed

circa 1950

Heated crystals in metal mounts (a) Felspar E79-'77

Sulphur trioxide crystals, in hermetically sealed bottle.

Sulphur trioxide crystals

Crystals for X-ray polychromator on Solar Maximum Mission satellite: (1) quartz (2) germanium

Crystals for X-ray polychromator on Solar Maximum Mission satellite

Four groups of natural crystals: quartz, fluorspar, sulphur and iron pyrites

Quartz crystals

Three examples of crystal remnants pulled from seed - one silicon, one germanium, one unknown.

crystals pulled from seed

circa 1950

Collection of 7 off quartz crystals (1940s) comprising:- (1) Type 6A No.1 - 877 KHz; (2) FT-171-B by Bliley Elect Co., Erie, Penna, Ex BC610 - 1746 KHz; (3) B7G based, type 942 - 4195 KHz; (4) GEC metal based - 2500 KHz probably; (5) TMV 87-A4 - 4637.5 KHz; (6) CR-1A/ AR CZX - 6727.77 KHz; (7) CR-1A/AR CUR - 6497.77 KHz

Collection of 7 Off Quartz Crystals (1940s)

1940-1949

Plastic packet labelled 'Perfect Health' containing blue and white stones and crystals, 1996.

Plastic packet labelled 'Perfect Health' containing blue and white stones and crystals

1996

Specimen of calcium salt (?) crystalline formation prepared from solution on wooden stick, English (?), 1801 to 1930

Specimen of calcium salt (?) crystalline formation

1801-1930

Unworked mass of silicon carbide (carborundum) crystals

Unworked mass of silicon carbide (carborundum) crystals.

Copper salt in envelope, presented by Field Museum of Chicago, probably from Afghanistan, 1900-1930

Copper salt in envelope

1900-1930

Potassi ferricyanidum crystals in polythene bag, English, 1871-1920

Potassi ferricyanidum crystals in polythene bag

Crystal block of barytes, from Eller Beck Mine, Westmorland, 1881-1899

Crystal block of barytes

1881-1899

A selection of crystals made of various superconducting oxides, by the Department of Physics at Oxford University, 1997

Crystals made from Superconducting Oxides

1997

Star of antimony

Star of Antimony

3 packets of "Persifoot" crystals, by J.W. Ross, Worthing

3 packets of "Persifoot" crystals, by J.W. Ross, Worthing

Series of five alum crystals showing transition from octahedron to cube.

Series of five alum crystals

Specimen of antimony, with leather stand. "Star of Antimony"

Star of antimony