(" Prophecy" or the " Company") ( TSX:PCY, OTCQX: PRPCF, Frankfurt:1P2N) is pleased to announce the diamond drilling results from Prophecy's 100% controlled Paca silver project in the Potosi department of Bolivia.
#Surpac inverse distance squared block free#
Feel free to open this string file and from the Inquire menu use Point Properties to view the description information contained in the D fields of each sample point. In this case the gold grades are contained in the file samples1.str in the second description field (D2). Please note that the above form specifies source data. From the Block Model menu, choose Estimation, Nearest neighbour.Assign a specific gravity of 2.9 to all block in the solid ore body “ore1.dtm”. Fill the “sg” attribute with the Assign Value method.From the Block Model menu, choose Estimation, Assign value.From the Block Model menu, choose Attribute, New.Notice the special icon and name of the block model that appears in the status bar. From the Navigator, click and drag the block model “block_model.mdl” into the view port to connect to it. Make sure you’re connected to the block model first.Choose one of the available formats (.csv. Create a Block Model Report and report the following:.Fill the “gold_nn” attribute with Nearest Neighbour estimation method.Assign a specific gravity of 2.9 to all block in the solid ore body “ore_real1.dtm”.
Assign a specific gravity of 2.5 to all blocks below the topography “topo1.dtm”. Add the attribute “sg” to the block model.Add the attribute “gold_nn” to the block model.The estimation methods that may be used are:Īssign the value of the closest sample point to a blockĪssign block values using an Inverse Distance estimatorĪssign an explicit value to blocks in the modelĪssign block values using Kriging with Variogram parameters developed from a Geostatistical studyįunctions concerned with a probabilistic block grade distribution derived from the kriging of indicatorsĪssign data from the description fields of closed segments to attribute values of blocks that are contained within those segments extended in the direction of one of the principal axes (X, Y or Z)Īssign block values from data in a delimited or fixed format text file This is achieved by estimating and assigning attribute values from sample data which has X Y Z coordinates and the attribute values of interest.
Estimation Once a Block Model is created and all attributes defined, they must be filled by some estimation method. This is true even if part of the block is above the DTM.įigure 2: Unconstrained block model in relation to a DTM surface.įigure 3: Same block model as in Figure 2 but constrained by topography (DTM). Constraints may be saved to a file for rapid re-use and may themselves be used as components of other constraints.īlocks meet a constraint (e.g.: below a DTM as in the figures below) if its centroid meets that constraint. Objects that may be used in constraints are plane surfaces, DTM’s, Solids, closed strings and block attribute values. A constraint is a logical combination of one or more spatial objects on selected blocks. Blocks may be of varying size defined by the user once the block model is created.įigure 1: Block model of oil sands coloured by attribute values (bitumen).Īll Block Model functions may be performed with constraints. Every block is defined by its geometric centroid and it’s dimensions in each axis. The properties or attributes may contain numeric or character string values. Each block contains attributes for each of the properties to be modeled. These are cuboid partitions of the modeled space and are created dynamically according to the operations performed on the Block Model. Records in the Block Model are related to blocks.
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