page_title: Cronstedtite
hierarchical_section_title: Cronstedtite
caption_attribution_description: Deutsch: Cronstedtit Fundort: Wheal Jane, Baldhu, Gwennap area, Distrikt Camborne - Redruth - St Day, Cornwall, England, Vereinigtes Königreich Größe: 1.5 cm English: Cronstedtite Locality: Wheal Jane (Falmouth Consolidated Mines), Baldhu, Kea, Camborne - Redruth - St Day District, Cornwall, England, UK Size&#160;: view 1.5 cm Français&#160;: Cronstedtite. Localité: Wheal Jane (Falmouth Consolidated Mines), Baldhu, Kea, Camborne - Redruth - St Day District, Cornouailles, Angleterre Taille: vue 1,5 cm
context_page_description: Cronstedtite is a complex iron silicate mineral belonging to the serpentine group of minerals. Its chemical formula is Fe²⁺
  ₂Fe³⁺
  ₄.
  It was discovered in 1821 and named in honor of Swedish mineralogist Axel Fredrik Cronstedt. It has been found in Bohemia in the Czech Republic and in Cornwall, England.
  Cronstedtite is a major constituent of CM chondrites, a carbonaceous chondrite group exhibiting varying degrees of aqueous alteration. Cronstedtite abundance decreases with increasing alteration.
context_section_description: Cronstedtite is a complex iron silicate mineral belonging to the serpentine group of minerals. Its chemical formula is Fe²⁺
  ₂Fe³⁺
  (Si,Fe³⁺
  O
  ₅)(OH)
  ₄. 
  It was discovered in 1821 and named in honor of Swedish mineralogist Axel Fredrik Cronstedt (1722–1765). It has been found in Bohemia in the Czech Republic and in Cornwall, England.
  Cronstedtite is a major constituent of CM chondrites, a carbonaceous chondrite group exhibiting varying degrees of aqueous alteration.  Cronstedtite abundance decreases with increasing alteration.
caption: Cronstedtite- Cornwall, England
exif: {"Image ImageWidth": "3564", "Image ImageLength": "3648", "Image BitsPerSample": "[8, 8, 8]", "Image PhotometricInterpretation": "2", "Image ImageDescription": "Cronstedtite Pisani", "Image Make": "SONY", "Image Model": "DSLR-A850", "Image Orientation": "Horizontal (normal)", "Image SamplesPerPixel": "3", "Image XResolution": "240", "Image YResolution": "240", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop CS5 Windows", "Image DateTime": "2011:02:26 08:05:52", "Image Artist": "Didier Descouens", "Image ExifOffset": "2438", "Image XPTitle": "[67, 0, 114, 0, 111, 0, 110, 0, 115, 0, 116, 0, 101, 0, 100, 0, 116, 0, 105, 0, 116, 0, 101, 0, 32, 0, 80, 0, 105, 0, 115, 0, 97, 0, 110, 0, 105, 0, 0, 0]", "Image XPAuthor": "Didier Descouens", "Image XPKeywords": "[67, 0, 114, 0, 111, 0, 110, 0, 115, 0, 116, 0, 101, 0, 100, 0, 116, 0, 105, 0, ... ]", "Image Padding": "[]", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "5190", "Thumbnail JPEGInterchangeFormatLength": "11092", "EXIF ExposureTime": "1/10", "EXIF FNumber": "20", "EXIF ExposureProgram": "Manual", "EXIF ISOSpeedRatings": "200", "EXIF ExifVersion": "0221", "EXIF DateTimeOriginal": "2011:02:26 08:50:52", "EXIF DateTimeDigitized": "2011:02:26 08:50:52", "EXIF ShutterSpeedValue": "415241/125000", "EXIF ApertureValue": "540241/62500", "EXIF BrightnessValue": "287/100", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "3", "EXIF MeteringMode": "CenterWeightedAverage", "EXIF LightSource": "Daylight", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "105", "EXIF ColorSpace": "Uncalibrated", "EXIF ExifImageWidth": "3564", "EXIF ExifImageLength": "3648", "EXIF FileSource": "Digital Camera", "EXIF SceneType": "Directly Photographed", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Manual Exposure", "EXIF WhiteBalance": "Manual", "EXIF FocalLengthIn35mmFilm": "105", "EXIF SceneCaptureType": "Standard", "EXIF Contrast": "Normal", "EXIF Saturation": "Normal", "EXIF Sharpness": "Normal", "EXIF Padding": "[]"}