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Mohs scale
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Images
Published: 14 September 2008
Fig. 5 Barrier strength vs. Mohs scale. More
Images
in Micromechanical Characterization of Fluid/Shale Interactions by Means of Nanoindentation
> SPE Reservoir Evaluation & Engineering
Published: 07 March 1980
Fig. 2 Index minerals on the Mohs scale: nanohardness vs. penetration depth (redrawing from Hangen 2001 ). More
Images
Published: 20 February 2007
Figure 5 Barrier strength versus Mohs scale. More
Images
Published: 09 December 2021
Figure 1 Mohs Scale More
Images
Published: 13 March 2023
Figure 2 Hardness of Chert on MOHS scale More
Proceedings Papers
Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-035
...Rock Engineering and Rock Mechanics: Structures in and on Rock Masses Alejano, Perucho, Olalla & Jiménez (Eds) © 2014 Taylor & Francis Group, London, 978-1-138-00149-7 A rock mass elastic modulus estimation using Mae Moh mine s large scale experiment data N. Mavong & A. Chaiwan Mae Moh Mine...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-118
... and 15 20°/SW, respectively. Fig. 1. Areas in Mae Moh mine. ARMA 13-118 Slope Monitoring of Large Scale Experiment of Undercut Slope at Mae Moh Mine, Thailand Mavong, N. Geotechnical Engineering Department, Mae Moh Mine, Electricity Generating Authority of Thailand, Lampang, Thailand Thepjun...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 15–18, 2021
Paper Number: SPE-208118-MS
... (ZnCO 3 , Mohs scale hardness - 4.5) and fluorite (CaF 2 , Mohs scale hardness - 4) was achieved in the reaction of calcite (CaCO 3 , Mohs scale hardness – 3) with ZnSO 4 and NaF, respectively. Chalk and limestone reacted efficiently with both solutions; however, the dolomite reaction with solutions...
Proceedings Papers
Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-095
... composition of the rock and combining this in some way with known values of the hardness of the individual minerals. Two systems of scaling rock hardness are in use, the first using Mohs' Scale of Hardness and the second using Rosiwal's Scale of Hardness (see Appendix for a description of each of these scales...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Formation Damage Control Symposium, February 8–9, 1988
Paper Number: SPE-17163-MS
... to be superior barite alternatives. Itabirite is micaceous hematite (Fe2O3) and has a hardness of 5.0 to 6.0 on Moh's scale and a specific gravity of 5.1. Abrasion and mud rheology experiments were conducted on itabirite and barite in water-base muds. Comparison of the rheological and abrasion properties...
Proceedings Papers
Paper presented at the International Petroleum Technology Conference, February 21–23, 2022
Paper Number: IPTC-22496-MS
... during reaction of calcite and DAP. These phosphates serve as precursors for formation of the end product hydroxyapatite known as mineral with 5 units of hardness according to the Mohs scale ( Balonis et al., 2020 ; Possenti et al., 2019 ). DAP was proven to be one of the effective consolidating agents...
Proceedings Papers
Paper presented at the ISRM International Symposium - 5th Asian Rock Mechanics Symposium, November 24–26, 2008
Paper Number: ISRM-ARMS5-2008-162
... ABSTRACT Metamorphosed carbonate bearing rocks contain mainly calcite, dolomite and secondary minerals which are their Mohs scale hardness over five. These minerals depend on chemical compositions of rocks, pressure and temperature condition of metamorphism are developed such as diopside...
Proceedings Papers
Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-035
... and has been used by a number of researchers (Atkinson et al., 1986; Suana and Peters, 1982; Michalakopoulos et al, 2006). Work by West (1986) and West (1989) indicated that CERCHAR abrasivity index values showed good correlation with the hardness of minerals determined from Mohs' scale of hardness...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the Golden Rocks 2006, The 41st U.S. Symposium on Rock Mechanics (USRMS), June 17–21, 2006
Paper Number: ARMA-06-980
... of hard minerals as infill, were preferably opened up during caving. This occurred irrespective of the mining methods, lithology and percentage of extraction within draw points. Hard minerals are defined as those having hardness greater than 4 in the Mohs scale. Although less abundant, such weak veins...
Journal Articles
Journal:
Journal of Petroleum Technology
Publisher: Society of Petroleum Engineers (SPE)
J Pet Technol 37 (02): 201–206.
Paper Number: SPE-13927-PA
Published: 01 February 1985
.... Bothmeet the requirements for chemical inertness and availability, but they differfrom barite in specific gravity and hardness. Properties of alternative weightmaterials as compared with API-grade barite are: Principal Specific Hardness, Component Gravity Moh's Scale Barite BaSO 4.20 2.5 to 3.5 Ilmenite...
Images
Published: 31 October 2022
Figure 7 (a) SEM photomicrograph of carbides fine particulates, sintered together by HEA BMG alloys. The hardness of the CRn-C is between 8 and 9 Mohs scale (diamond being 10). (b) TEM photomicrograph of boundary and interfacial structure between ultra-hard crystalline particulates. More
Proceedings Papers
Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-087
... HARDNESS AND ABRASIVITY By hardness we mean any indicator of strength of materials at a very small scale. The indicator can be either an ordinal number, specifying the ranking of the class to which the material belongs in a scale of hardness (the best know example is Mohs hardness), or the numerical...
Proceedings Papers
Precipitation and Inverse Velocity Responses of an Undercut Slope at Mae Moh Mine, Lampang, Thailand
Paper presented at the ISRM International Symposium - 10th Asian Rock Mechanics Symposium, October 29–November 3, 2018
Paper Number: ISRM-ARMS10-2018-162
.... (2013). Slope monitoring of large scale experiment of undercut slope at mae moh mine, thailand. Paper presented at the 47th US Rock Mechanics / Geomechanics Symposium 2013, 1237-1245. Mavong, N., Chaiwan, A., & Leelasukseree, C. (2014). A rock mass elastic modulus estimation using mae moh mine's large...
Journal Articles
Journal:
SPE Drilling & Completion
Publisher: Society of Petroleum Engineers (SPE)
SPE Drill & Compl 23 (03): 295–300.
Paper Number: SPE-105449-PA
Published: 14 September 2008
...Fig. 5 Barrier strength vs. Mohs scale. ...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-297
... 34.8 0.14 3.3. Controlled ground vibration There was such a high level of ground vibration at the Mae Moh mine, the engineers had to use the scaled distance model and Langefors and Kihlstrom s model to calculate the maximum weight of each explosive charge per delay [9]. The models for the maximum...
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