{"id":2999,"date":"2026-09-07T14:47:56","date_gmt":"2026-09-07T12:47:56","guid":{"rendered":"https:\/\/mineralien-weltweit.com\/product\/eisenkiesel-fluorite-johannesschacht-woelsendorf\/"},"modified":"2026-09-07T14:47:56","modified_gmt":"2026-09-07T12:47:56","slug":"eisenkiesel-fluorite-johannesschacht-woelsendorf","status":"publish","type":"product","link":"https:\/\/mineralien-weltweit.com\/en\/product\/eisenkiesel-fluorite-johannesschacht-woelsendorf\/","title":{"rendered":"Eisenkiesel on Dark Violet Fluorite from Johannesschacht, W\u00f6lsendorf"},"content":{"rendered":"

This large Eisenkiesel specimen from the Johannesschacht near W\u00f6lsendorf in Bavaria, Germany, shows an extensive reddish to reddish-brown Quartz mineralization on dark violet Fluorite. Eisenkiesel is the traditional name used for iron-bearing, commonly hematite-colored Quartz. The Fluorite forms the underlying matrix of the specimen and remains clearly visible in several areas between and beneath the Eisenkiesel coatings. <\/p>\n

Measuring 12.0 \u00d7 10.0 \u00d7 7.0 cm and weighing 816.7 g, this is a large cabinet specimen. Large parts of the surface are covered by densely packed, very small Quartz crystals whose reddish coloration is caused by iron-bearing, respectively hematitic components. <\/p>\n

Reddish Eisenkiesel on dark violet Fluorite<\/h3>\n

The Eisenkiesel forms broad rounded to cushion-like coatings across the specimen. The surface consists of numerous very small, densely intergrown Quartz crystals that show a fine crystalline sparkle under direct illumination. <\/p>\n

The coloration ranges from gray-brown and beige-brown areas to distinctly reddish and reddish-brown zones. This iron-related coloration is characteristic of Eisenkiesel. <\/p>\n

Beneath the Quartz crust, dark violet Fluorite is visible in several places. Especially along the sides and lower parts of the specimen, violet Fluorite areas are clearly exposed and form a strong color contrast with the reddish Eisenkiesel. <\/p>\n

Johannesschacht in the W\u00f6lsendorf fluorite mining district<\/h3>\n

The Johannesschacht near W\u00f6lsendorf belongs to the historic W\u00f6lsendorf fluorite mining district in the Upper Palatinate. For a long period, the district was one of Germany\u2019s important mining areas for Fluorite and is also well known mineralogically for its diverse Fluorite associations. <\/p>\n

The combination of Eisenkiesel with dark violet Fluorite is well documented from the Johannesschacht. This specimen displays that characteristic association on an unusually large matrix and therefore illustrates the mineralogical character of the historic W\u00f6lsendorf district particularly well. <\/p>\n

\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Feature<\/th>\nDetails<\/th>\n<\/tr>\n<\/thead>\n
Mineral<\/td>\nQuartz<\/td>\n<\/tr>\n
Variety<\/td>\nEisenkiesel<\/td>\n<\/tr>\n
Associated mineral<\/td>\nFluorite<\/td>\n<\/tr>\n
Locality<\/td>\nJohannesschacht, W\u00f6lsendorf, Bavaria, Germany<\/td>\n<\/tr>\n
Dimensions<\/td>\n12.0 \u00d7 10.0 \u00d7 7.0 cm<\/td>\n<\/tr>\n
Weight<\/td>\n816.7 g<\/td>\n<\/tr>\n
Size category<\/td>\nLarge cabinet specimen<\/td>\n<\/tr>\n
Color of Eisenkiesel<\/td>\nGray-brown to reddish-brown, locally reddish<\/td>\n<\/tr>\n
Color of Fluorite<\/td>\nDark violet<\/td>\n<\/tr>\n
Luster<\/td>\nFine crystalline luster<\/td>\n<\/tr>\n
Habit<\/td>\nDensely packed, very small Quartz crystals<\/td>\n<\/tr>\n
Crystal arrangement<\/td>\nBroad rounded to cushion-like coatings<\/td>\n<\/tr>\n
Fluorite<\/td>\nDark violet, partly visible beneath the Eisenkiesel<\/td>\n<\/tr>\n
Special <\/td>\nEisenkiesel on Fluorite from the historic W\u00f6lsendorf fluorite mining district<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

This large Eisenkiesel specimen from the Johannesschacht near W\u00f6lsendorf in Bavaria, Germany, shows an extensive reddish to reddish-brown Quartz mineralization on dark violet Fluorite. Eisenkiesel is the traditional name used for iron-bearing, commonly hematite-colored Quartz. The Fluorite forms the underlying matrix of the specimen and remains clearly visible in several areas between and beneath the […]\n","protected":false},"featured_media":2995,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[351],"product_tag":[],"class_list":["post-2999","product","type-product","status-publish","has-post-thumbnail","product_cat-minerals","first","instock","sold-individually","shipping-taxable","purchasable","product-type-simple"],"yoast_head":"\nEisenkiesel on Fluorite from W\u00f6lsendorf | Johannesschacht<\/title>\n<meta name=\"description\" content=\"Eisenkiesel from Johannesschacht near W\u00f6lsendorf with reddish Quartz coatings on dark violet Fluorite. 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