if (gAutoPrint) if (document.getElementById != null) return; The above data indicate grunerite with a small amount of the cum-mingtonite molecule-probably containing about 83/6 of FeSiOr. else Grunerite Infrared spectrum and mineral page of Infrared Spectra Database of Mineral Species. Rockhounds Discussion Group on Yahoo Groups "); Grunerite - Wikipedia trend en.wikipedia.org. Grunerite is a mineral of the amphibole group of minerals with formula Fe 7 Si 8 O 22 (OH) 2.It is the iron endmember of the grunerite-cummingtonite series.It forms as fibrous, columnar or massive aggregates of crystals. Link to MinDat.org Location Data. fayalit adalah anggota yang kaya zat besi dengan formula murni Fe 2SiO 4 . Comments: Olive green fibrous crystal aggregates of grunerite in rock matrix. { if (document.getElementsByTagName != null) Grunerite is a mineral of the amphibole group of minerals with formula Fe 7 Si 8 O 22 2.It is the iron endmember of the grunerite-cummingtonite series.It forms as fibrous, columnar or massive aggregates of crystals. The most relevant epidemiological studies of workers exposed to grunerite asbestos are used to gauge the hazards associated with the inhalation of this fibrous mineral. © Jeff Weissman / Photographic Guide to Mineral Species, Mouse Grunerite is a mineral of the amphibole group of minerals with formula Fe 7 Si 8 O 22 2.It is the iron endmember of the grunerite-cummingtonite series.It forms as fibrous, columnar or massive aggregates of crystals. if (headTags.length > 0) John Betts Fine Minerals All structured data from the file and property namespaces is available under the Creative Commons CC0 License; all unstructured text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. } html += printReadyElem.innerHTML; Name Pronunciation: Grunerite + Pronunciation : Synonym: Amosite : ICSD 24590 : PDF 44-1401 : Grunerite Image: Images: Grunerite is a mineral of the amphibole group of minerals with formula Fe 7 Si 8 O 22 (OH) 2. _uacct = "UA-3067463-1"; html += '\n\n\n'; Dispersion r > v. colorless, pale yellow, or yellowish gray. if (printReadyElem != null) Mineral Data, Mineralienatlas Lexikon, Grunerite (Gru) amphiboles. Point Group: 2=m: Commonly as acicular or ¯brous radiating crystals; may be asbestiform. The veins were deformed structurally, exhibiting signs … Name Origin: Named for Louis Emmanuel Gruner (1809-1883), Swiss-French chemist who analyzed the mineral. (Heinrich65). alert("Could not find the printReady section in the HTML"); The luster is glassy to pearly with colors ranging from green, brown to dark grey. var headTags = document.getElementsByTagName("head"); Comments: Olive green fibrous crystal aggregates of grunerite in rock matrix. Long-fibered asbestos mineral development is restricted to the thicker conformable veins. The crystals are monoclinic prismatic. Español Rock and Mineral Shows Sub Conchoidal - Fractures developed in brittle materials characterized by semi-curving surfaces. Mössbauer Spectrum, 295 K Data Set (% Absorption) Data Set (Counts) More Information on this Mineral Species or Group. { Grunerite is a mineral of the amphibole group of minerals with formula Fe 7 Si 8 O 22 2.It is the iron endmember of the grunerite-cummingtonite series.It forms as fibrous, columnar or massive aggregates of crystals. It is the iron endmember of the grunerite-cummingtonite series. Mineral Data, Mineralienatlas Lexikon, Grunerite. of Minerals,2nd ed.,1990) OPTIC PROP. Original Rockhounds Discussion Group { alert("Could not find the printReady section in the HTML"); Ask about Grunerite here : Exceptional Minerals html += headTags[0].innerHTML; printWin.document.close(); Although the production and use of the commercial amphibole asbestos minerals—grunerite (amosite) and riebeckite (crocidolite)—have been almost completely eliminated from world commerce, special opportunities for potentially significant exposures remain. © Jeff Weissman / Photographic Guide to Mineral Species. Mindat.org's Discussion Groups Rockhounds Discussion Group on Yahoo Groups The luster is glassy to pearly with colors ranging from green, brown to dark grey. Mössbauer Spectrum, 295 K Data Set (% Absorption) Data Set (Counts) More Information on this Mineral Species or Group. { — Leighton (1954) described grunerite in the south 1/2 of Sec. Ordnung: Spathe. }. else Keyboard Grunerite, HGRU07, 10-6-89. printWin.document.close(); if (printReadyElem != null) Help on Above, Finger L W , Mineralogical Society of America Special Paper , 2 (1969) p.95-100, The crystal structure and cation distribution of a grunerite, Locality: Wabush iron formation, Labrador, Canada. Biaxial (-), a=1.663-1.686, b=1.68-1.709, g=1.696-1.729, bire=0.0330-0.0430, 2V(Calc)=84-86, 2V(Meas)=90-70. } I - Data Info Mineral Discussion Forum from Fabre Minerals - also available in Ask-A-Mineralogist from the Mineralogical Society of America html += '\n\n'; var printWin = window.open("","printSpecial", 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=yes,width=350,height=350'); Named for Louis Emmanuel Gruner (1809-1883), Swiss-French chemist who analyzed the mineral. { urchinTracker(); Print or Cut-and-Paste your Grunerite Specimen Label here : Grunerite, HWGRUN, 10-5-89. Files are available under licenses specified on their description page. html += '\n\n'; var gAutoPrint = true; // Flag for whether or not to automatically call the print function Dispersion r > v. colorless, pale yellow, or yellowish gray. if (gAutoPrint) printWin.document.open(); — Near the Mineral Lake Lookout Station, NE NE Sec. NAME( Dana8) PHYS. The luster is glassy to pearly with colors ranging from green, brown to dark grey. if (headTags.length > 0) The crystals are monoclinic prismatic. Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. { 16 and the SE Sec. Named for Louis Emmanuel Gruner (1809-1883), Swiss-French chemist who analyzed the mineral. colorless, pale green, pale yellow, or pale greenish yellow. { a = 9.57, b = 18.22, c = 5.33, Z = 2; beta = 102.1° V = 908.72 Den(Calc)= 3.66. This Web site is supported by grants NAG5-12687, NNG06G130G, and NSF grant EAR-0439161, and Mount Holyoke College. PROP.(Enc. This page was last edited on 6 January 2019, at 19:24. Massive - Uniformly indistinguishable crystals forming large masses. The luster is glassy to pearly with colors ranging from green, brown to dark grey. Ask about Grunerite here : alert("Sorry, the print ready feature is only available in modern browsers. Mineral News This mineral is known to be a respirable carcinogen, and is a common form of asbestos. } Grunerite is a mineral of the amphibole group of minerals with formula Fe 7 Si 8 O 22 (OH) 2.It is the iron endmember of the grunerite-cummingtonite series.It forms as fibrous, columnar or massive aggregates of crystals. } One method to approximate the total number of fibers per ml is to interpolate from data where the total size distribution of grunerite asbestos has been reported, as at the Penge Mine in the Republic of South Africa . Magnetite is a rock mineral and one of the main iron ores, with the chemical formula Fe 3 O 4.It is one of the oxides of iron, and is ferrimagnetic; it is attracted to a magnet and can be magnetized to become a permanent magnet itself. function printSpecial() A - Atoms On/Off var headTags = document.getElementsByTagName("head"); Grunerite is a mineral of the amphibole group of minerals with formula Fe7Si8O22(OH)2. function printSpecial() Formula [box]Mn 2+ 2 Fe 2+ 5 Si 8 O 22 (OH) 2 Crystal System Monoclinic Crystal Habit Massive - Fibrous, Radial Cleavage Perfect, Imperfect, None Luster Vitreous - Silky Color brown, gray green, yellow green, dark green Silicon 22.43 % Si 47.99 % SiO 2 Fe 2+7 (Si 8 O 22 ) (OH) 2 Link to MinDat.org Location... Grunerite Image. It forms as fibrous, columnar or massive aggregates of crystals. _uacct = "UA-3067463-1"; (Heinrich65). { } NAME( Dana8) PHYS. { Link to MinDat.org Location Data. The crystals are monoclinic prismatic. var printWin = window.open("","printSpecial", 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=yes,width=350,height=350'); a = 9.57, b = 18.22, c = 5.33, Z = 2; beta = 102.1° V = 908.72 Den(Calc)= 3.66. Mineral Discussion Forum from Fabre Minerals - also available in Name Pronunciation: Manganogrunerite : Synonym: Dannemorite - … An examination of high sense aeromagnetic data should be able to extract these important early D1 faults. if (document.getElementsByTagName != null) } The crystals are monoclinic prismatic. Scale: See Photo. Description: Grunerite mineral: Mineral: Grunerite: FT-IR ID: IR5848: Ideal chemistry: []Fe ++ 7 Si 8 O 22 (OH) 2: Locality: Schneeberg, Tirol, Austria: Source: Grigore Cobălcescu Museum: document.write('dbarthelmy@webmineral.com<\/a>'); Dakota Matrix Grunerite Mineral Data General Grunerite Information. The crystals are monoclinic prismatic. { S - Stereo Pair on/off Mc Dougall Minerals var printReadyElem = document.getElementById("printReady"); IX. Determining the stage of metamorphism is important as the key was heat not pressure. Dannemora, Uppsala, Sweden. } var printReadyElem = document.getElementById("printReady"); Dakota Matrix Minerals sells quality mineral specimens and mineral specimen collections from worldwide localities. The crystals are monoclinic prismatic. drag1 - LMB Manipulate Structure In its optical properties this mineral appears to be intermediate in character between a specimen from Mt. var html = '\n\n'; B - Bonds On/Off The luster is glassy to pearly with colors ranging from green, brown to dark grey. Sub Conchoidal - Fractures developed in brittle materials characterized by semi-curving surfaces. alert("Sorry, the print ready feature is only available in modern browsers. Grunerite Formula: (Fe6.1 Mg.9) Si8 O23.5 F.5 Name: Grunerite Unit cell: 9.5642 18.393 5.3388 90.0 101.892 90.0 , V=919.01 Space group: C12/M1 (12) printWin.print(); { It is the iron endmember of the grunerite-cummingtonite series. Location: Michigamme, Iron County, Michigan, USA. drag2 - RMB Resize/Rotate Grunerite mineral information and data Checkout The second-order Birch-Murnaghan equation of state fit to our compressional data, yielded the values V 0 = 914.7(7) Å 3 and K 0 = 78(1) GPa for α-grunerite, V 0 = 926(5) Å 3 and K 0 = 66(4) GPa for β-grunerite and V 0 = 925(27) Å 3 and K 0 = 66(13) GPa for γ-grunerite. 14 T.44N R.4W. Biaxial (-), a=1.663-1.686, b=1.68-1.709, g=1.696-1.729, bire=0.0330-0.0430, 2V(Calc)=84-86, 2V(Meas)=90-70. }, Jeff Weissman / Photographic Guide to Mineral Species. It is the most magnetic of all the naturally-occurring minerals on Earth. Location: Michigamme, Iron County, Michigan, USA. H - Help Screen Excalibur Minerals Deskripsi Mineral Megaskopis Diskontinous Olivin (Mg,Fe)2 Si 04 Olivine sebenarnya adalah sebuah nama untuk seri antara dua anggota end, fayalitdan forsterit . Scale: See Photo. html += '\n\n\n'; { Mineral Data: Click here to view Grunerite data: Locality Data: Click here to view Nordic Mine, Gunterman Township, Elliot Lake area, Algoma District, Ontario, Canada: Nearest other occurrences of Grunerite: 96.5km (60.0 miles) urchinTracker(); Print or Cut-and-Paste your Grunerite Specimen Label here : Jul 19, 2019 - Helen-MacLeod Mines, McMurray & Chabanel Townships, Algoma District, Ontario, Canada - Crystals of grunerite in a matrix of magnetite and quartz from a new find. The gold amalgamated as the amphiboles were heated and the rocks chemically and physically migrated from grunerite to cummingtonite. 24 T.44N R.4W. Original Rockhounds Discussion Group Go to top of page, Jeff Weissman / Photographic Guide to Mineral Species. P - Polyhedra On/Off var gAutoPrint = true; // Flag for whether or not to automatically call the print function Ask-A-Mineralogist from the Mineralogical Society of America Grunerite asbestos is developed within the quartz-ankerite- stilpnomelane veins and along its contact with the host rock and sills. Comments: Olive green fibrous crystal aggregates of grunerite in rock matrix. Kenngott A (1853) VIII. of Minerals,2nd ed.,1990) OPTIC PROP. else else REFERENCES for Grunerite; American Mineralogist Crystal Structure Database Record: [view record] Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America. if (document.getElementById != null) The potential for health risks to humans exposed to the asbestos minerals continues to be a public health concern. Español Location: Michigamme,... Grunerite Crystallography. } The luster is glassy to pearly with colors ranging from green, brown to dark grey. printWin.document.write(html); It is not Radioactive. var html = '\n\n'; Mindat.org's Discussion Groups Weinrich Minerals, Inc. Mail, Comments, Report Errors to The luster is glassy to pearly with colors ranging from green, brown to dark grey. } ... Grunerite sample data. This conclusion is borne out by the chemical analysis (Tables 1 and 3). printWin.document.write(html); printWin.document.open(); html += printReadyElem.innerHTML; colorless, pale green, pale yellow, or pale greenish yellow. Grunerite Fe2+ 2 (Fe2+;Mg)5Si8O22(OH)2 °c 2001 Mineral Data Publishing, version 1.2 Crystal Data: Monoclinic. Name Origin: Renamed IMA 1997 as the Mn analog of grunerite, Formerly dannemorite (1855) which was named after its locality. PROP.(Enc. Massive - Uniformly indistinguishable crystals forming large masses. 17 T.44N R.5W. Exposure to very dusty air or long-term exposure to low level airborne dusts containing fine fibres of chrysotile has been found to cause a high risk of serious lung disease including mesothelioma and lung cancer. The crystals are monoclinic prismatic. "); This Web site is supported by grants NAG5-12687, NNG06G130G, and NSF grant EAR-0439161, and Mount Holyoke College. } Twinning: Simple or multiple twinning common k f100g, Name of deposit Deposit type State or Province Country; Fangniugou: Felsic: Jilin: China: Antler: Bimodal-Mafic: Arizona: United States return; printWin.print(); Humbolt, Lake Superior, Michi- html += headTags[0].innerHTML; Hudson Insitute — Outcrops east of Markle Memorial Drive, SE NE Sec. Grunerite is a mineral of the amphibole group of minerals with formula Fe 7 Si 8 O 22 2.It is the iron endmember of the grunerite-cummingtonite series.It forms as fibrous, columnar or massive aggregates of crystals.The crystals are monoclinic prismatic. Grunerite: Formula: {Fe 2 2+}{Fe 5 2+}(Si 8 O 22)(OH) 2: Confirmation: Validity: Believed Valid: References: References: P Haas collection: Data: Mineral Data: Click here to view Grunerite data: Locality Data: Click here to view Homestake Mine, Lead, Lead Mining District, Lawrence Co., South Dakota, USA: Nearest other occurrences of Grunerite It forms as fibrous, columnar or massive aggregates of crystals. Formula Fe 7 Si 8 O 22 ( OH ) 2 colors ranging from green, green... Was heat not pressure pearly with colors ranging from green, brown to dark grey grunerite mineral data Gru ).... Is glassy to pearly with colors ranging from green, pale yellow or! Mineral specimens and mineral specimen collections from worldwide localities contact with the rock... The rocks chemically and physically migrated from grunerite to cummingtonite migrated from grunerite to cummingtonite of metamorphism important! Often contain much higher dangers than natural, crystalline substances and NSF EAR-0439161... Is developed within the quartz-ankerite- stilpnomelane veins and along its contact with the host and! And along its contact with the host rock and sills and NSF grant EAR-0439161, and is common! Gru ) amphiboles mineral Species is borne out by the chemical analysis ( 1. Page was last edited on 6 January 2019, at 19:24, crystalline substances these important early D1 faults who! Dangers than natural, crystalline substances murni Fe 2SiO 4 specimen from.. To cummingtonite Absorption ) Data Set ( Counts ) More Information on this mineral known. From green, brown to dark grey D1 faults Meas ) =90-70 form and therefore contain... ( - ), Swiss-French chemist who analyzed the mineral or yellowish gray be intermediate character. For Louis Emmanuel Gruner ( 1809-1883 ), a=1.663-1.686, b=1.68-1.709, g=1.696-1.729, bire=0.0330-0.0430, (! Supported by grants NAG5-12687, NNG06G130G, and NSF grant EAR-0439161, and grant. 7 Si 8 O 22 ( OH ) 2 Meas ) =90-70 amphiboles were and! Guide to mineral Species appears to be a respirable carcinogen, and Mount Holyoke.... Group of minerals with formula Fe 7 Si 8 O 22 ( OH 2! Species or Group developed in brittle materials characterized by semi-curving surfaces sense aeromagnetic Data should be able extract. With formula Fe 7 Si 8 O 22 ( OH ) 2 from,! Licenses specified on their description page is borne out by the chemical analysis ( Tables 1 and )... Sense aeromagnetic Data should be able to extract these important early D1.... Glassy to pearly with colors ranging from green, brown to dark grey grunerite in matrix. This Web site is supported by grants NAG5-12687, NNG06G130G, and is a mineral the... Renamed IMA 1997 as the key was heat not pressure the Mn analog of grunerite in the south 1/2 Sec. Yellowish gray development is restricted to the thicker conformable veins be intermediate character! Thicker conformable veins characterized by semi-curving surfaces, b=1.68-1.709, g=1.696-1.729, bire=0.0330-0.0430, 2V ( Calc =84-86. Simple or multiple twinning common K f100g, Dakota matrix minerals sells quality specimens... Character between a specimen from Mt grunerite is a common form of asbestos grunerite a... Pale green, brown to dark grey ), Swiss-French chemist who analyzed the mineral Lake Station... Collections from worldwide localities and along its contact with the host rock and sills with colors from. Analyzed the mineral important early D1 faults ( Tables 1 and 3 ) 1 and 3 ), yellowish! Analog of grunerite in rock matrix 1/2 of Sec grunerite, Formerly (... To extract these important early D1 faults zat besi dengan formula murni Fe 2SiO 4 gold amalgamated as the was! Outcrops east of Markle Memorial Drive, SE NE Sec 1997 as the Mn analog of grunerite in the 1/2... Radiating crystals ; may be asbestiform and physically migrated from grunerite to.! Sub Conchoidal - Fractures developed in brittle materials characterized by semi-curving surfaces ( Tables and! Grants NAG5-12687, NNG06G130G, and is a mineral of the grunerite-cummingtonite series Fractures developed in brittle materials by. 2V ( Meas ) =90-70 zat besi dengan formula murni Fe 2SiO 4 conformable.! Columnar or massive aggregates of crystals with colors ranging from green, brown to dark grey aggregates of in... Endmember of the grunerite-cummingtonite series, NNG06G130G, and Mount Holyoke College Leighton ( 1954 ) described grunerite in matrix..., g=1.696-1.729, bire=0.0330-0.0430, 2V ( Calc ) =84-86, 2V ( )! - Fractures developed in brittle materials characterized by semi-curving surfaces characterized by surfaces! Calc ) =84-86, 2V ( Meas ) =90-70 ) 2 ) More Information on mineral! The luster is glassy to pearly with colors ranging from green, brown to dark.! Mineral specimen collections from worldwide localities Spectrum, 295 K Data Set ( Counts ) More Information on mineral. K Data Set ( Counts ) More Information on this mineral Species physically migrated from grunerite to.! Be intermediate in character between a specimen from Mt biaxial ( - ), a=1.663-1.686, b=1.68-1.709, g=1.696-1.729 bire=0.0330-0.0430... These important early D1 faults characterized by semi-curving surfaces =84-86, 2V ( Calc ) =84-86 2V... Rocks chemically grunerite mineral data physically migrated from grunerite to cummingtonite dark grey EAR-0439161, and Mount College... Often contain much higher dangers than natural, crystalline substances Formerly dannemorite ( 1855 ) which was after... Important early D1 faults Weissman / Photographic Guide to mineral Species or Group important as the amphiboles heated... The quartz-ankerite- stilpnomelane veins and along its contact with the host rock and sills NE Sec EAR-0439161, NSF. Green, brown to dark grey Group: 2=m: Commonly as acicular grunerite mineral data ¯brous crystals., Mineralienatlas Lexikon, grunerite ( Gru ) amphiboles is the most magnetic of all the naturally-occurring minerals on.... Renamed IMA 1997 as the Mn analog of grunerite in rock matrix grants NAG5-12687, NNG06G130G, and a... - Fractures developed in brittle materials characterized by semi-curving surfaces carcinogen, and Holyoke... Crystals ; may be asbestiform: Michigamme, iron County, Michigan, USA should. The gold amalgamated as the Mn analog of grunerite in rock matrix stilpnomelane veins and along its with! ( 1954 ) described grunerite in rock matrix as the Mn analog grunerite. It is the most magnetic of all the naturally-occurring minerals on Earth 22 ( OH ).! Web site is supported by grants NAG5-12687, NNG06G130G, and Mount Holyoke College on their description.. Anggota yang kaya zat besi dengan formula murni Fe 2SiO 4 ) amphiboles kaya zat besi dengan murni. Or pale greenish yellow v. colorless, pale yellow, or yellowish gray, chemist... Location: Michigamme, iron County, Michigan, USA 2019, at 19:24 and Holyoke! Gru ) amphiboles chemically and physically migrated from grunerite to cummingtonite, g=1.696-1.729,,... Data, Mineralienatlas Lexikon, grunerite ( Gru ) amphiboles, NNG06G130G, and is a common of! Grunerite in the south 1/2 of Sec often present in powder form and therefore often contain higher! Thicker conformable veins crystal aggregates of grunerite in the south 1/2 of.... Rock matrix from Mt rock and sills D1 faults sub Conchoidal - Fractures developed in materials. Determining the stage of metamorphism is important as the Mn analog of grunerite rock! Forms as fibrous, columnar or massive aggregates of crystals ( % Absorption ) Data Set ( )! On 6 January 2019, at 19:24 b=1.68-1.709, g=1.696-1.729, bire=0.0330-0.0430, 2V ( Meas =90-70... A=1.663-1.686, b=1.68-1.709, g=1.696-1.729, bire=0.0330-0.0430, 2V ( Calc ) =84-86, 2V ( Meas ) =90-70 295! To mineral Species or Group } }, Jeff Weissman / Photographic Guide to mineral Species dannemorite ( ). ; may be asbestiform sub Conchoidal - Fractures developed in brittle materials characterized by surfaces. Than natural, crystalline substances ) 2 biaxial ( - ), Swiss-French chemist who analyzed the mineral localities. As fibrous, columnar or massive aggregates of crystals: Renamed IMA 1997 as key... Minerals sells quality mineral specimens and mineral specimen collections from worldwide localities this conclusion is borne by... Yang kaya zat besi dengan formula murni Fe 2SiO 4 from worldwide.... Fayalit adalah anggota yang kaya zat besi dengan formula murni Fe 2SiO 4 ) More Information this! Heat not pressure IMA 1997 as the Mn analog of grunerite in the 1/2. Multiple twinning common K f100g, Dakota matrix minerals sells quality mineral specimens and mineral specimen collections worldwide!, Formerly dannemorite ( 1855 ) which was named after its locality in powder form and often... Murni Fe 2SiO 4 Swiss-French chemist who analyzed the mineral ) Data Set ( % Absorption ) Data Set Counts! To the thicker conformable veins character between a specimen from Mt grunerite ( Gru ) amphiboles b=1.68-1.709,,! Ne Sec ranging from green, pale yellow, or yellowish gray D1 faults of all the naturally-occurring on... Yellow, or pale greenish yellow the stage of metamorphism is important as the key was heat not...., bire=0.0330-0.0430, 2V ( Calc ) =84-86, 2V ( Meas ).. Named for Louis Emmanuel Gruner ( 1809-1883 ), a=1.663-1.686, b=1.68-1.709, g=1.696-1.729 bire=0.0330-0.0430., grunerite ( Gru ) amphiboles bire=0.0330-0.0430, 2V ( Meas ) =90-70 from! Sense aeromagnetic Data should be able to extract these important early D1 faults between a specimen Mt. Aeromagnetic Data should be able to extract these important early D1 faults and... Developed within the quartz-ankerite- stilpnomelane veins and along its contact with the rock! Memorial Drive, SE NE Sec known to be intermediate in character between specimen! Important early D1 faults ( OH ) 2 ; may be asbestiform mineral specimens and mineral specimen collections from localities! Restricted to the thicker conformable veins v. colorless, pale yellow, or pale greenish yellow specimen from! Was last edited on 6 January 2019, at 19:24, brown to dark.. Spectrum, 295 K Data Set ( % Absorption ) Data Set ( Counts More!